Choo, how much are you looking to spend?

I have a couple Krell amps powering my system... I was able to get them pre-owned for a decent price.

http://www.hometheater.com/content/krell-industries-kav-250a-and-kav-250a3

these are the amps i have... 500W@4 ohms All day long.. depending on what you are looking for, and how patient you are, you can get a recently serviced amp.

I don't know how you feel about pre-owned stuff, but this would be my recommendation...

You can expect to pay in the ballpark of 1,000-1,500$ each for these amps... i guess it depends on what your definition of "budget buy" is... they are currently going for 1/2 to 1/4 of their original retail price...