Just thought I'd chime in. I'm trying the LR 510 cartomizers from Provape on the Wetbox and there's a significant difference (well - going from 3.4ohms on the megas to the 1.6-1.7ohm Provape ones, is going to make a difference). And so far they seem to allow for longer draws than say the 1.5 LR attys on a 14500 batt. But I'm not a 10 second draw guy either, so still some caution there. Also using the long delrin tips.