My "old" athlon 1.4Ghz system has an ALi magik chip on it's board, and the reviews did make it one of the fastest boards out there, only if you could get a properly working one (and I do...).
But yeah, ATi is really a card to have lots of respect for. I'm a former NVidia afficionado, and I switched to their canadian competitor when I saw what they did with the 45.XX+ drivers, before forceware. I mean, illegal driver optimizations for benchmarking is NOT something I look keenly on.
Sure, ATi use driver optimizations as well. BUT they do bring a difference in real games as well, not just benchmarking.
Hence, why I didn't bother with a GeForce FX and went with my Radeon 9600PRO instead. Even if they have not-as-good OpenGL support than NVidia, this is something I'm willing to live with if I'm going to have a stable, performant system.c
Now, if they can bring those new radeons out... I'll get myself a 9800PRO XT for cheap! XD