Looking for a new amp...my old 15w ain't cutting it anymore.

Can anyone recommend a good amp in the 300-350 price range? I'm guessing that'd be around 50w or so in terms of power...not sure. I haven't been able to find that much info in general, and I figure asking here would be best, seeing as I can get some opinions on brands and such.
Obviously I gotta test 'em out, but I'd like to not play 20 diff ones then decide.

Any suggestions are appreciated.