Just wanted to chime in as well...I have several and they all have their pros and cons but the main advantage is battery life and inexpensive, readily available batteries. I have been vaping for some time and have avoided most of the name brands since the mods became available but last month i ordered an EGO to see how it worked. I was a little worried because i read in some of the threads that batteries would not be sold seperately but that has since been put to rest. I do have to say that i don't get near the battery life that others seem to, but i am a heavy vaper. I am averaging about 300 5-sec draws which for me comes to about 4-5 hours when in the office. This is perfectly acceptable but i would like to eventuallly see a passthru for it to allow me to save battery while in the office. I agree with the other posts that my biggest like about the EGO is the size. I never really found that vaping the mods at higher voltage produced any major advantages and that 3.7 produced plenty of vapor and TH when the right juice was used. I travel frequently and i can now carry a weeks worth of supplies in a small pouch. Good job to Janty, but i'd like to see multi-packs of the batteries similiar to the way TW is providing them...wouldn't want to have to order Janty design from them instead.....
