I'm looking for a practice amp that could be used for jamming. After searching on this forum, there seems to be some love for Silverface Princetons. (Right now, I have only a Dr. Z Maz 18 Jr, and it's just too loud for practice.) I have had a FBJ, but it didn't cut it for me tone-wise. There's a TON of boutique five watters out there right now, but I want to be able to use it for blues jamming with drums and bass. What's a reasonable price for a SF Princeton? I know this seems like a very open-ended question, but I've never really gone down the vintage amp road before, so ANY advice from persons knowledgeable would be very welcome. Thanks!