As a former owner of 2 E36's (318i and M3 sedan) I would agree with you, but I'd say the E46 M3 is the show stopper when comparing the two lines. So I'll call the E36 a close second to the E46 and say the coupes from both lines look better than the E92.

If they put a rear valance on the back of the E92, it would help to eliminate the big butt look.