Im looking for a new amp but the only one Ive ever bought before came packaged real cheap along with my first guitar. So I really dont know what to be looking for. It needs to be light and portable (so probably solid state im guessing), and not too big (but i still wanna hear it and the people next door do too). Its mainly going to be used to practice in a dorm room. Id like a combo amp so theres not much to play around with. Id also like a nice deep classic rock Led-Zeppelinish sound. It will be matched up with a Fender 60's classic jazz bass. Finnally it should be around $400. What brands are decent, any good values out there? Thanks for the help!