Personally, I buy the same brand, every time, because I know exactly what to expect from them, and how they react to a given situation.
Even two pieces of hardware who's only difference is that they come from different manufacturers will have enough differences to make them difficult to use in some situations, and to troubleshoot.
I use AMD because I prefer how their processors perform vs an equivalent intel. Not how well they perform, but how they do their job.
The thing is that the new Intel Conroe processors out perform any of the current amd DESKTOP processors, no if ands or buts about it. Read the reviews and look at benchmarks. The Conroe E6600 will out perform the amd fx-62 processor and its cheaper. Its $380ish dollars cheaper and faster than the amd fx-62. The Intel E6600 is only $311ish dollars.
About what you said here...
I use AMD because I prefer how their processors perform vs an equivalent intel. Not how well they perform, but how they do their job.
What you typed above is no longer true because of the new Intel conroe core 2 duo processors. They completely redesigned the chip and its not based on the trashy pentium 4 architecture.
I agree with you if you were comparing amd X2 to the older Pentium 4 line or Pentium D. The amd X2 is better than the older pentium 4 architecture and chip all together but like I said when you compare the new Intel Conroe core 2 duo up to the amd X2 the Conroe wins.
Get what you want im just telling you the better performer.