New to the thread, but I've been following it for a while. I've been on the V4L stick type batteries for over a year and finally decided to move on up, so I ordered the V4L Ego kit, which just came today. All I gotta say is anyone using the old cigarette style skinny batteries - run, dont walk, to your PC and order an Ego kit. Night and day difference. The 5ml mega carto they come with seem ok (GREAT TH and vapor, but Im curious to see how long a 5ml carto will last), but I've been using the 3.5ml tanks for a few months and love them. My only gripe about using the tanks with the Ego is the Egos have an 808 thread, which creates about a 1/4 inch gap between the tank and the PV, which looks kind of cheesy. With the mega cartos it's not an issue since they were designed to use with the Ego, while the tanks were designed for the skinny batteries.Overall really pleased with my purchase. For some reason, V4L only sells the Ego batteries in kits with s charger, so you cant order them separately. So I waited for a nice sale and doubled up on the kits so I have 2 batteries and 2 chargers.Pics of the Ego with tank vs the mega carto:http://img585.imageshack.us/img585/9414/ego2.jpghttp://img651.imageshack.us/img651/3139/ego1.jpg