Just bought one of these, and I wanted to respond to a thread, but evidently I can't. Grrr. So anyways, one issue mentioned was that the air holes are on the incorrect side to be lined up with the coils. However, that is if you wrap right handed. If you wrap left handed it would be ok. Second, the main differences I've seen is the omega rda clone has 2 o-rings, different finish, the airholes on the inside "pan" aren't large enough and need to be drilled, and the "fins" at the top aren't the same. Since I've just bought mine, I've haven't gotten it working yet. I need some metal drilling bits. I broke my normals ones drilling larger air holes on my nimbus clone.