I was thinking a little more about this.
My observations, for what they are worth.
I was always very impressed with Elements, then I moved to CS3.
From CS3 to CS5. I thought that was the canine testicles. ( if not somewhat pricey)
But over the years it occurred to me that one programme may not in reality do it all.
So along side CS5
Topaz deNoise (Plug in)
free trial & currently priced at $79.99 But it does go on special offer from time to time( IIRC I paid about half that on special offer)
Very much kicks CS5 in the nuts, although I'm not convinced about the AI sharpen ( extra) programme.
Affinity
Free trial and currently priced at £47.99 but is available on special offer from time to time ( I paid about half that on special offer)
Blows CS5 away, with its photo stacking ability.
DXO Nik collection (Plug in)
Following a query post from me, regarding the functionality, of the free trial a couple of guys (
@Retune @stupar ) came to the rescue
with a free (legit) older but full version.
It has some great presets, great for HDR and or Tone mapping.
So I doubt the one programme fully suits everyone's needs
certainly not mine.