Why AMD?
They certainly were the dark horse of the CPU market for a while, but Intel's chips can't be beaten in bang for buck
In fact the bottom of the range Q6600 beats the three current Phenom chips in most benchmarks, plus the Motherboards available for Intel chips are generally better atm.
I'll allways be an AMD/ATI fan, but my current Intel/NvIdia system can't be beat by them!