Hey Jim, you should add the KR808D-1 and D-2 to that list, As well as the E9. It looks like they starting to push these models a bit more. The Smoke 51 Duo is an E9 and it took me awhile to figure that one out. Had to actually buy a KR808 carto to see if it would fit, and it did'nt but I recieved my first (real) KR808D-1 kit the same day I got the carto and have'nt turned back. I may get an adaptor for the batts so I can use them with my KR808 cartos.