The 18" Aeon Thin Crash is simply a wonderful cymbal. After improperly receiving a regular 18" crash Thomann immediately sent out the correct 18" Thin cymbal and I got to keep the original shipment, three cheers to that. I'll compare and contrast the two. The thicker 18" crash is lower pitched than the Thin Crash by a whole step and they pair wonderfully. The bow and bells are also differently shaped with the 18" having a much bigger bell and the Thin have a more exaggerated bow. The hammering marks are also more aplenty on the Thin and also they're also lighter hits --- In short, the 18" crash and the 18" Aeon Thin crash are two different cymbals. Both open up nice and easy, the Thin is almost a fast crash, the regular has a decay that sticks around but the both sound great. Very Very Very happy with my purchase. Buy one