when you are saying "good" and "fail" are you referring to good for the battery or good vapor production?
all i know is that the 2.0 EDMCC produces lackluster vapor. but the 1.5s are fantastic. could be a battery fail, but for now im living in vapor heaven. the only downside im experiencing (so far) is extremely short batt life. but it only takes an hour to charge from 2 bars to 5 on my vv ego...so thats not much of a downside imo.
all i know is that the 2.0 EDMCC produces lackluster vapor. but the 1.5s are fantastic. could be a battery fail, but for now im living in vapor heaven. the only downside im experiencing (so far) is extremely short batt life. but it only takes an hour to charge from 2 bars to 5 on my vv ego...so thats not much of a downside imo.