No, I am not fishing - it is a dog because there are far better bodies in the same budget available, even if they are used. I have several professional friends who bought into the 750 for the reasons people state - best all rounder...but it is made of chocolate, it isn't fully featured, it is a pro spec camera masquerading in amateur clothes. I know five of those guys who sold the 750 within a month, and were woefully disappointed with it - four of them went back to their 700s!
The 800 series will provide better resolution, better build quality - and unless you make You Tube videos for teenage girls, it is definitely an inferior camera - a dog.
D800 series are way better built.
D700 also a better choice for taking stills.
It was plasticky, felt all worng - you could get a good used D4 for the same budget.
Arguably the best of those 'old' cameras was the D3X - almost as good as the D5, just not got the most modern processing, but an awesome camera - you try and find one being sold, anyone who has one is hanging on to it. They should be throwing them away and buying the new, all singing, all dancing, all new processors etc D750, but they don't want to downgrade.