Budget amps.


I'm looking to buy my first set of separates. I'm looking for a 5 channel amp. I would like 150watt minimum on the front 3 channels. My speakers seem to tax my 105watt B&K receiver pretty good. Can you guys give me some suggestions for something around the $600-$800 range, new or used. Emotiva, is right their with New stuff. I've seen some used Outlaw stuff in that range, what else. I'm Interested in anything decent New or Used.
jdfelice
Thanks, Actually I am selling the receiver. I'm trying to upgrade to separates. I am planning on getting a new processor because my receiver was outdated in terms of audio processing and video pass through. I figured instead of blowing the budget on a new receiver maybe a used amp and new processor might yield a better overall combination. What do you think? By the way, how does Sherbourn stack up against these others. I found one that may be in this price range.
Post removed 
Check out http://www.odysseyaudio.com/products.html. Not sure how often their 5 channel amps come up used, but the two channel units are commonly available, sturdy and good sounding values. You would need a good processor to go with it.
No knowing what speakers your using, really makes these recomnmendations pretty much a guess. I'll join in with my own guess, I always thought the Marantz MA mono amps were pretty good for inexpensive surround sound.