I guessed lp100 when I first got it too, but from what I've seen LP100's always have had "Les Paul" printed on the headstock.. It doesn't feel cheap and sound horrible like the other lp100's ive played either. I wish there were a clear way to know. I wont be depressed if it turns out to be the cheap lp100 i guess, i still enjoy playing it sometimes, I like the fact that the body is rounded and thinner and lighter than my sons Epiphone Les Paul plus top. His looks beautiful with the cherry sunburst ect, but this LP feels closer to my Sonex, but the Sonex is still way better. LOL thanks to everyone for your posts.