V2 of the provari is put out to replace V1 . The reason was so the provari could use LR cartomizers and atomizers etc . V2 can be set as low as 2.9 volts where V1 could only go as low as 3.3 volts . Why because so much is available in LR and dual coil . Why because they are trying to give you more power by lowering the resistance . I think too much is being put out as LR causing more and more battery problems . I bought a tankomizer and with the cartomizers I had for it I could not use it on a V1 provari without burning it that is how low it was . Ego where not designed for that much current . Lately there is the ego twist but can it really handle the extra current and heat ? I am not so sure . If you take a puff wait a while before taking another puff and do what you can to keep it cool I guess you will be OK or you can buy a good mod that can take the higher current and not over heat if you puff on it a little harder and one that will last . So it is up to you if you want a disposable ecig or a mod that will last .
Good points. The twist will not handle as many amps as the Provari V2, I am sure (2.5? not sure). Another thing I have noticed this afternoon is that I have to take some "primer" puffs on the Twist to get the vapor, flavor, TH combination that is satisfying. But, it can be accomplished with LR atty's, cartos, Ego Vision Clearomizers, etc.
With the Provari, these primer puffs are not necessary. Take one puff, inhale and that is it. Much more power, vapor, flavor, TH etc. I suspect I will waste less juice since I am puffing less and inhaling more.
The ego Twists are not in the same catetgory as the Provari and I did not mean to imply they are. I only want to say that IMO, one needs a backup that will not require a great deal of money to replace should it become lost, stolen, fallen overboard, etc. and still get the job done adequately. The Twist meets this requirement for me - YMMV.