The Ovations, with their man-made bowl backs, all have their own sound that is not quite like a wooden guitar. To my ears the deeper bodied ones sound better than the shallower ones. All plug in nicely. Some say that the man made body helps them to stay in tune in varying humidity and I think that is particularly true of the carbon-fibre fronted Adamus ones. The bridges are usually adequately stable but I have heard of the tops coming off the bodies. Some have an on-board tuner which can be handy. They have always been expensive new. If it is cheap with no obvious structural issues, it is likely to be a sound buy with a possible profit if ebayed!