Any thoughts from the guitar players here on what kind of acoustic guitar to get a teenager who is teaching himself to play? Nothing expensive(I may hit the pawn shops to see if I can find higher end models for cheap), but I want something that will stay in tune and not warp or fall apart. He’s actually not doing too bad, I overheard him playing Iron Maiden on the little 3/4 size acoustic I got him when he was 10 a couple days ago. I think he needs a full size guitar now.