This is a touchy question. Anyone can tell you what to get, but when it comes down to it, you have to see what sounds good to your ears. Most people will tell you to go with a Tube amp. But there is a BIG difference in price from solidstate to tube. I personally prefer tube amps, preferably Marshall also. But there are a few Mesa's I've been looking at and a Hughes & Kettner that I'm really into. You probably want a combo amp also, since you will mostly be in your room. You might want to look into the Marshall JCM 2000 DSL401. A40 watt tube combo, a 12" speaker. Or the Marshall JCM 2000 TSL601, 60 watt tube combo with a 12" speaker. If you do need to bring it out of your room remember one thing... most clubs have a sound system so you can always mic the amp so it doesn't get drowned out. But it depends on your budget... but the holidays will be here soon.

here's the links:
http://www.marshallamps.com/images/products/dsl/dsl401.html
http://www.marshallamps.com/images/products/tsl/tsl601.html