There seems to be a dividing line between the cheapest bolt on guitars and the more mid-priced models. The nut is usually very poorly cut on the cheap ones, it may even be misaligned. Tuners are covered gear, functional with loop and lack stringing but not ideal. Humbuckers are very hot, non-P90 single coils are lacking character. P90's are usually good. Electronics are better than you might expect in most cases. The higher end Epiphones are typically very good. Pickups sometimes aren't a good match, such as the very overwound P90's on the Casino.