I'm not buying that. nVidia's lineup is impressive but I was able to play around with some ATi setups at the GDC and they too are impressive.
Buying a video card is kind of like buying gas to me. When I get gas, I understand that all the stations have the same shit, so I try to go to the one that might be a penny or two cheaper just to reward them.
While not an exact analogy, it is kind of spot on. Each generation of cards, at least for the 7x00 for nVidia and the 1x00 for ATi, they were all stellar cards. The only way they could best each other in the end was by adding more RAM to the video cards. A lot of people buy by brand but most buy for preformance and if I can't afford a flagship card, I more than likely can afford to get a mainstream card from the same maker, just to say I have that brand sometimes.
Both of the two big companies make good shit and your more than likely a liar if you try to tell me that you can see a differacnce between 5-10 FPS if your all ready up in the 100+ FPS to start out with. Before you nail me to the cross, I know the differance is there, it's just not noticable. If you have the money, listen to the benchmarks for the flagship GPUs, if not, get what you can affors as you can get a great card for the money if you do your homework.