Actually I have a bank of computerized chargers many of which cost as much as I have spent on all my vape gear to date. However I seriously doubt anyone into vaping would appreciate me recommending a charger that cost 10 times what they just spent on their first upgrade from an eGo to an 18650 mod. The Nitecore i2 and i4 have a huge following in the flashlight industry and most all law enforcement agencies use them. With that being said I personally find the i series of chargers to be the best dollar for dollar to recommend to vapors. Yes it is barely a smart charger with it rudimentary brain but when you consider the number in use compared to the number of reported failures (personally I have never seen one reported as over charging, the common and singular problem I have heard is they just quit powering up) I wouldn't hesitate recommending one for vaping.If you charge LiPo's that big, why do you not have an actual high-end charger? A Nitecore i4 is not considered a high-end charger. A Nitecore i4 is what I would consider the bare-bones charger you can get away with, but under watch during the charge. That is exactly the type of charger I personally would not trust charging overnight. Although it has a circuit board to monitor voltage, I still would not put all of my trust in a $15 charger. A hobby-grade charger such as the HiTec X1 is what I consider a high-end charger. The X1 is the only charger I own that I personally would trust charging batteries unmonitoried, however even then I still only use my X1 when I am around to make frequent checks and never leave batteries unmonitored.
However if someone reading really wants to go over-the-top on chargers, well you can get a Prophet for $280, H4 for $275 or an advantage for $200 but I'll spend my cash on a mod or 4 and $20 on a Nitecore i4.