I purchased a used Classic 50 212 a year ago and simply find the amp to be a great purchase. Mine was constructed in early 2018 and the circuit board is no longer a folded board like people are saying here. I don't know about the Classic 30 and Delta series, but I suspect they have been redesigned also. It is a single flat circuit board, so if you buy new, you will end up with a different circuit. My amp was in mint condition and while it isn't a Twin Reverb in its sound, find it to have a little more grit to it that makes it fun to play. Mine has the Celestion Midnight 60 speakers, which I plan on changing out to Webers very soon. If you get the Classic 50, you will experience a cooling fan that is loud at low volumes. I just switched mine out the other day and everything is much quieter now. I love Peavey amps and think they are decent products at a decent price. I believe the reason the Classic Series is a bit of a sleeper is that most of the guys are into Fender or Marshall, which is fine. But I think Peaveys are just perceived to be slightly less in performance and not as "in". However, if you look at their 5150 and connections to Eddie Van Halen, you will find no shortage of love for those amps and they have an exceptionally strong following. Steel guitar players seem to swear by Peavey, too. One thing you will find on here is that nearly every person who owned a Peavey Classic 50 and later sold it always regrets their decision to sell it. They wish they had it back. Try one out, you will have a nice amp with lots of great sound, and it should hold up just fine for you.