keyboard amplifiers

I wasn't sure what the right forum was for this question as it's not necessarily related to recording, but I'm wondering if anyone has experience with moving gear around in the cold.

Are they any good? Or who makes or has a good amp?

I am currently using a fender super reverb (circa 1970) for a keyboard amp. I'm pleased with the sound that I get from it, but the weight/size makes it less desirable for gigging. Does anyone have any suggestions for mid to small size amps (preferably tube)that still retain a full sound? The amp will primarily be mic'd.