Well, I don't do a ton of gaming but when I do it I want it to be as awesome and frustration-free as possible. But TBH the games I play tend to be older and require less in the way of hardware.
OTOH I tend to buy older games because I never have the hardware to run the newer ones.
I am looking right now at the Radeon HD 6850, which is still reasonably priced for me. A lot will depend on how other expenses work out over the next couple of weeks. But I will also have to decide something soon, because choice of PSU will depend a lot on what (if anything) I decide to do about gfx cards. I've run three different online PSU calculators, and I get recommendations from 750W to 1000W depending on which card (and how many of them) I specify.
It's funny because the one at Corsair returns the lowest wattage requirements, and they'd be the only place of the three that would be trying to sell me a PSU.