I just picked up a Super Champ X2. I got the Ltd wine colored one used. It's a bit out of your budget, but a used standard one would probably do it. 15 watts, but again just a 10" speaker. I bought it specifically to play out with friends. It's got a lot of different settings, but there were 2 specifically that reminded me of a Princeton. It was the main selling point when I got it. May want to check it out. Edit: the more I think about it you may want to really check out the monoprice. It does have the 12" speaker and the on board reverb isn't bad. I've had it few months, but got a lot going on and haven't really given it a fair shake down. I have plugged in my Wampler Ethereal and it's a much better reverb \delay. With speaker and tube change this amp may be just what your looking for.