i like my tanks (liquinator, map, depth charge, lava, surge) but i think the surge looks the best on the SB because its the same diameter. unfortunately its not out to the public yet. so my next best one would have to be the BFT liquinator.
also try the cartos from
310Vapers Store. they have 20 smoktech dual coils for $29.xx THATS A STEAL!
or if you dont like dual coils they have single coil LR 1.5 ohm cartos! the only place ive seen with them too, also at a great price.