Ive used the innokin MVP 2 now for coupla weeks and so far it has been phenomenal. No problems at all. This was my first variable voltage batt and it is great. It helped me charge my dead samsung phone too on a trip. But it is a tad big.
Also have the iclear 16 that came with the kit and it was alright. OK for the taste, good vapour output, easy refill and cleaning. Compared to cartos, the taste was a bit muted as expected with clearos. But i cant really use it since i have cinnamon juices in my stash now...