I watched PBusardo's review of it and it looked pretty neat. I liked the ability to use cartos (i'd prefer using my stock of already purchased cartos, it comes with 3 different adapters) and it has a built-in passthrough ability also. I believe it had the lockout feature, and LED indicator for battery level. Just wondering if these are good devices or if there's something else that's pretty much the same. All i've used for ecigs so far are Volt batteries, I haven't delved into the bigger battery dept's yet. I haven't came across many familiar sites that sell these Lea Krosses is one of my biggest concerns i guess.