I just wanted to add my two cents to this thread. I just started vaping after a lot of reading, searching, watching videos, and more reading. Ultimately, my decision was that I wanted an all-day vape without the fuss of carrying around extra supplies. After even more research, I found Old Goat's mod (
Big Stu's Box Mods illuminated bottomfeeder). It is the best price I could find for a juicebox mod, and Ron (Old Goat) gets nothing but praise for his service and workmanship. I ordered one, along with some mixing supplies. Last night marked the 48-hour point without an analog for me. I'm wearing it around my neck right now at work. I know a lanyard seems a bit goofy, but it's fantastic for driving or any task that requires your hands, for keeping the mod close-at-hand. I'm not going to go into full-review mode, but I do get more than 24 hours out of a single charge and bottle refill. The batteries take a couple hours to charge and the bottle takes a few seconds to refill.
I understand that it's not the top-of-the-line juicebox available, but it may be the best choice for newbies on a budget. I think it may be well worth it to mention it in the OP, but that's just my two cents.
PS - just want to point out that Ron sells both 3.7v and 5v versions. I've got the 3.7v version.