I need your opinion on a variable voltage mod. I have the buzz and love it, when it works. But today it is starting to act up. I have had to send it in for repairs once before (it wouldn't turn off). Today I've noticed it come on by itself a couple of times. I am NOT bashing the buzz or the maker, just to make sure that's clear. I've loaned my Riva out to my aunt to try to get her to make the transition to vaping, so want to order another mod tonight. It needs to be Variable Volt and reliable. What do you guys have and what are the pros and cons????? I like the idea of an automatic juice feed system, but it is not an absolute requirement. I think the ali'i is slick, so any input on that is appreciated.