Martin,
I used to be a 3dfx fan. The Voodoo 2 was one of the most marvelous pieces of hardware I have ever bought. When I upgraded, I took a TNT2 and I have been hooked on NVidia stuff for a long time. I have bought the TNT2, two GeForce 2 GTS cards, a GeForce 3 (vanilla) and a GF4 TI4400.
If I am recounting this hardware history, it is to be very clear on one point : I was a rabid (well, not to the point of biting anyone, via email or otherwise) NVidia fan until the Dustbuster came and shattered my expectations. I was really disappointed by the FX line, but I guess I had put too much hope there.
In any case, it was with a twinge of regret that I upgraded to an ATI product, after having been wary of their driver support for years.
Therefor, you can count on me when I say that, if the Radeon had the slightest issue, the least disfunctionality I could discern, I would (no doubt bitterly) say so. But such is not the case for me, it has performed flawlessly, churning through the texels whatever I throw at it.
It is with great surprise that I learn that ATI cards can still cause issues that were the very basis of my reluctance to choose them. I count myself lucky, then, and will place even greater hopes in the upcoming NV40, slated to return the crown of performance to NVidia. If that does happen, I shall return to the fold and be happy.
Pascal.