I use two 15w monoprice amps in a 5-cable stereo setup with my band. Overall they have been working great. If I had to nitpick-
I don’t like that the power cable is hardwired. Would much rather have an IEC connection.
On both amps, the tubes they came with started crapping out after about a year. Fortunately I had enough tubes laying around to get it back in shape.
The reverb is ok. Kind of meh actually. But, it’s not bad either, and it’s foot switchable. I don’t think that applies if you’re buying used though, I heard the spring tanks in the first version kind of sucked.
I also have the 5w, which is nice too, though I only use it clean, not a big fan of the way it breaks up.