Instant reaction is, sod the body, put your spend in the lens. BUT, I come from the film only era, when the body was little more than a light tight box to keep the film in; A-n-d, it wasn't uncommon to come accross folk with 'cheap' Russan Zenit's or East German Practika, SLR's sporting 'expensive' Ziess or Contax or Pentax lenses, and an owner who'd tell you, "Yeah, well saved my money for better film"... Which is an aproach that does make a lot of sense....
BUT.. these days the body IS the film... and the thing is, film was a one shot 'consumeable'. So, IS a better digital body, like film, something cheap and of limited use, you will replace frequently, OR as a film for life, IS a better body the 'better' film? It IS a conundrum.
Personally, I lean more towards the former suggestion. Electrification & ultra-consumerisation of cameras into the digital era, HAS made them significantly 'bic-biro' disposeable consumer products of synically short commercial and operational life span.. unlike my film camera, many of which were built to last a life-time, and plenty are still serviceable after forty years or more...
Leap into world of Widgetal SLR's was begged only a few years ago, by the 'death' of my third digi-compact, in barely a dozen years... each as successvely more mpressive in it's specs than the last.. as it was shorter lived!
Err... yeah... my old 'all metal' Sigma MK1 SLR is still going strong after forty odd years.. my little XA2 compact was retired after a very hard life through my youth, after twenty.. still works.. but some damage to the lens gives some curiouse flare effects occasionally.... I have a Ziess Ikonta 120 roll film, bellows 'folder'that is rather nice, that is probably seventy or more years old, and still going strong! Digital cameras that, on average, have a serivce life of just FOUR YEARS before they break?!? I have left film in a camera longer than that, and expected it to still work when I pick it back up!
NOT, like a widgy-pact, where I pick it up after five or six months, find it wont switch 'on' because of a flat battery, that wont charge; replacement of whch is either more expensive than a new camera, or impossible as 'obsolete part'!!! Heck! I can still get batteries for all my film camera's that even need them! NOT that they need them very often.. except the Olympus OM4.... which has always strugglesd to make a set last as long as a 36exp film... even if I shoot it in a day! But that's anther story!
It's actually a little ironic, that I bought my frst widgy-pact back in 2003, when I was assured it was a wonderful inovation, and despite the price, it would 'pay for itself' as I wouldn't have to buy film.... y-e-a-h rght!.. I'm still buying film! Thing took 4-AAA batteries, and quickly proved to have a rather gorgan apetite for them! Fitting rechargeale AAA's also proved futile, the 1.2v they delvered instead of 1.5 provided by an alkaline wouldn't power the thing up... and it rapidly became apparent that the ruddy thing cost more per frame in batteries than my film cameras did in film!
I was a little more circumspect picking my next one! A-N-D, it's main sales feature was that it ony took two AA's.. A-N-D I made chap in the shop PROVE to me it would power up off ni-cad rechargeables before I handed over money for it!....
Do you remember the joke about the man who ask for the time at a railway station? chap he asked put down his suit-cases, looked at his new 'digital' watch and said, "Yes, well its 42 Degrees in New York, the Deli stock exchange is down three points, Hong-Kong up two... Isreal seems to be arming for war again, whilst Russia haven't put nuclear missiles into Afghanstan..." And carries on offering world news headlines for ten minutes before 1st chap says "Yeah, but I JUST wanted to know what time it is?!".. "hold on", says the man with the watch... "Fantastic invention this, tells me ALL this stuff.. but have to work through the buttons to get to the one that tells me the time... Four minutes past three!" he adds eventually.. "Your train is late, it will be in in forty minutes the drver's name is Jim, look" and shows first chap the watch. 1st chap is much impressed, and asks him how much it cost "Oh! Only a fiver" he replies, adding "Amazing what they can do with electronic these days.... mind" He adds picking up the suitcases... "Batteries are a bit of a bugga to lug around"....
Yeah... how profetic was that in the '80's (I think he 2-Ronnies did a sketch around it), given interet enabled smart phones now? BUT.. that second widgi-pact was a bit like that.. diddy little camera... BIG bag of 'spare' batteries on my belt, to replace the ones in it that lasted about half a dozen shots!
Twice bitten, I WAS somewhat sceptical of the next, and the assurances over how long I could expect a 'dedicated' Lith-Ion rechargeable to last.. I will confess, it DID exceed my expectations... BUT.. those expectations weren't very high to begin with! lol!
Pace of development in consumer electronics in the last 20 years, has seen dramatic year on year specification improvements, accomanied by ever lower counter costs, that 'have' converged to an acceptable quality level, where image quality and costs 'may' challenge that of film, depending on how you do the sums.... Electric Picture maker, HAS cost me in the last five years more than I ever spent on film cameras and film for them, in the twenty five before.... and jury is still out over how much VFM I will get from it before it, like the widgi-pacts before 'dies' on me!
Hence, I am inclined to the opinion, that the camera body probably WONT last, and will have to be replaced in the not too distant future, when a newer 'better' model, will, likely offer even more bang for my buck.. for an even shorter service life! And at SOME point.. If the trend continues as it has for the last fifteen or twenty years, I will at some point be buyng new camera bodies, in 'five packs' like I did film twenty years ago... and probably about as often! Lol.
BUT, with a little luck.... the lenses may endure... or at least I hope so.
My D3200, four years ago, shipped with the 18-55 lens as a 'kit', and the body+lens consumer 'kit' WAS actually cheaper than buyng the camera body only.... so I got the kit lens essentially for less than 'free'.....
This sort of begs suggestion, that maybe it doesn't matter. Days of 'system' cameras with iterchangeable lenses, may be short-lived, and 'better' all in one, 'super-zoom' consumer cameras, could get to the point that they DO fullfill most of the promice they are 'all' the camera you will ever want, for most people, and probably packed into mobile phones, 'specialist' niches for anything in the market outside thier scope, whithers, and that's ALL you can get!
But hopefuly, I will still be able to buy FILM!
Ultimately, I think you have to look at the 'whole' these days. When started out, old-school attitudes were still strong, and cameras were expected to lat a life-time, and that you could 'build' your kit as and when you could afford or needed or wanted, around a pretty humble first camera. But that ethos is pretty much made redundat by modern marketing.
Now, makers try and sell you 'everything' you will ever need, here ad now, and then encourage you to chuck it all away when they can offer something 'bigger-better-faster-more' to convince you, it's no longer any good, and you need to buy it all all over.....
So I think you have to be that much more discerning, and NOT buy more than you really need t any one time, whilst being prepared to have to buy it all over at some point in the not too distant future, when it isn't enough, or it is broken, and any ecconomy from the legacy of what you bought orignally WILL remain signifcatly speculative.
Bottom line as far as the photo's are concerned is that the camera plays a TINY proportion in the results, and even that first widgi-pact I bought fifteen years ago, with a mere 1.3Mpix sensor, and incredibly limited manual control, and remarkeably 'dire' fixed lens, MADE PICTURES.. and todays electric-picture maker, for all its higher sensor resolution, for all it's more versatile lenses, WONT automatically get me very many more pictures I will get any greater enjoyement from looking at...
Do you pt your money nto the camera, or the lens?
NO! You put as LITTLE money into either as you ca get away wth, and go spend the REST takng ruddy photo's with it! THATS where yu will find more and better pictures; uing the damn thing, whatevr it is, whatever the specs or the price ticket.. outside, in the world where life happens... NOT n the box, that has batteries in it!