Ive got a couple rda's, one rdta, 2 rta's and 2 smok tanks. Tfv8 and 12. On the smoks, i use drop ins. Strictly for the convenience. The tfv12 king is really super nice, a regular fog machine. I like the rta's very much too. I get awesome flavor from these. If i had to pick a favorite, i honestly cant. I like them all. I also have an aspire cleito sitting here collecting dust so i can safely say its not my favorite. Dont know why, other than the other above mentioned devices out perform the cleito and literally leave it sitting in the dust. The main rda i use is a dead rabbit and the other is a little 22mm deal that came with a mech that never worked. The rta's are both wotofo bravos. They rock. The limitless plus rounds out my collection, so far. This is a nice gadget too. Oh yeah, i forgot one. The ijoy capo. The rda that came with the squonk.