I can't imagine a 60 Watt Amp cutting it for even a small room. I've always felt that you don't want to be maxing out your amp every time you use it. I have an 8 channel Yamaha EMX860 and it has served me really well. I do a single accoustic thing so at times it seems like overkill but when my friends show up at a gig (and they have!!), the channels get filled up quick and I have the power to go with it. It's pretty light and can be gotten for around $600 - $700.

Good Luck! Frank