Best Motherboard Combo 2010 Best Processor/motherboard Combo For $150-$200?

Best processor/motherboard combo for $150-$200? - best motherboard combo 2010

I want to buy a new motherboard (ATX) and the processor on my desktop. I did not take place with the technology and an opinion on this point.

So I have some questions. You can answer or direct me a website that provides this information.

What is the best processors in the range of $ 100 - $ 125? Is Intel Duo, Athlon54 Dual Core, or something else? And what is a micro ATX motherboard to go with him?