I recommend BCC's Such as pt2, ....
Such similer devices but different looks are as follows : EVOD, MT3S, MT4, T3, T32, T3s, T4, X6S , REM, V2, V2-DT6 ,V2-DT8 , BCC , Mini BCC, KWX6 , X9 Protank, Protank 2, Protankmini, KWX5, PURITANK, Davide Mini Glassomizer etc. Pick up any of the listed...