You can get a nice $50 Gigabyte Mobo for AMD @NewEgg and a decent X2 CPU for $65. This is much less than you can get any C2D w/ a Decent Mobo. This will give you extra money for a good GPU if you don't have much money.
However, Even the cheap E2160 for $90 when OC'd to it's potential will beat any current AMD processor in most tasks when fully OC'd.
So, there really is no point to any mid-range AMD CPU other than non-analytical favoratism.
In my opinion, support the company that appeals to you at this point, as price/performance is factored into the prices. AMD has an Apple-type following and is the underdog, and they take great care in their products. I paid 119$ CAD for an Opty 165 S939 and the stock cooler has heatpipes even. I am happier with a slower system that I am proud of which is probably how most people feel as AMD is still around... And yes, I will support Barcelona, Phenom, Fusion, etc. when it comes out too, even if they are a fair amount slower than Intel offerings, I am sure it will be "fast enough".