one was made by vertx which was probley cheaply made and copied by lucky and then theres a lucky one made by the company that actually made the disgn
first off i fucking hate vertx so don't think im defending them
vertx designed the smx, then sold them to lucky, vertx was an OEM company
thats like saying all the chinese companies copied east2west's wheels, or any company that has OEM wheels, which actually aren't that bad