I remember entering a AMD Dirt3 comp, winning, but was so busy with work that week, I didnt check the forums, and the prize went to the next person! Haha...
I'm using an AMD Phenom X6 1055t, OC'd to 3.2GHz, Turbo's to 3.5~3.6Ghz. And up until yesterday, also an HD6870 gfx card.
But now I'm using an HD7870 2GB OC edition, simply awesome peformance for the price (beats the GTX660Ti in this metric!) That is what I look for, because these days, even a mid range setup will give you a top notch gaming experience (not that the HD7870 can be called midrange). And that is why I choose AMD.
I must mention that the new range of CPU's (bulldozer) have been lacking, not providing any noticeable benefit over the previous gen.
Which was a bad move from AMD, when they could have just die-shrunk their PhenomII X6 series, with some tweaks to get even higher performance and lower power consumption (I know its not as simple as that). Maybe even get a native 8 core series going, Phenom X8 anyone?
