yea, im using a custom homebuilt AMD system right now, like i said i like AMD they have done LOTS for ALL of us... but Intel has an excellent product in the Core2Duo and Core2Quad(IF you do professional apps like 3D rendering, video editing and such)
If I had to start from scratch, I would be going with a Core 2 Duo. Of course, I'd have to get new memory (which I would have to do even if I stuck with AMD).