PRS 2 Channel Custom 20 Combo
I bought a demo model of this amp from Sweetwater and have been completely satisfied with it. I was a bit apprehensive about a 20 watt amp, but it's delivered the goods on stage. I've used it with a Fender Strat and a PRS DGT, and both sound great through this little beast. Like most PRS amps, it's very musical and articulate, even when pushed. One aspect of using a low-wattage amp is that you can really crank the volume and push some air without shattering glass.
For amps in this price range, the 2 Channel Custom is worth looking into.