I would recommend a Peavey Classic 30. It's a tube amp and has a great warm sound, and it's only about $350 (at least it was when I bought mine in 1998).
I assume single speaker and what wattage? What do you like about it and what do you not like? I had a Peavey once upon a time. The price is right, is it single channel no frills?
I prefer tube amps by far.
My favorite amp is the Fender Twin.