Just about anything will be a step-up from what you're used to. Even if you go the route below, you might consider an economical, yet functional kit like the below as a backup:
https://www.myfreedomsmokes.com/starter-kits/standard-voltage/evod/kanger-evod-bcc-starter-kit.html
Something like this is honestly just fine while you get your feet wet going from cigalikes. Much more vapor and options, and compatible with something like a mini protank or glass 510 atomizer for caustic eliquids. And you have basic redundancy builtin for $25.
The next step up from that is a cheaper box mod and a tank system with replaceable coils so you aren't having to mess with stuff. For a battery, I'd recommend looking at:
- Smok xpro m50/m65
- Clouper
- MVP 20w
- istick 30w
Out of those, the MVP is generally the most reliable but also the most limited in wattages -- but the only one that does step-down voltage so that it's compatible with more basic tanks (it'll often taste burnt otherwise). Most of the tanks you'll be looking at won't need more than 35w, and most except the Atlantis will be fine at 6-15watts.
A few tanks:
- Protank 2 / Mini PT 2: A favorite for multiple reasons.
- Genitank: Economical, generally works well.
- Nautilus: Some love them, but their coils are really hit/miss.
If you have a cloupor or istick or smok and want to really blow clouds, you'll be looking at these:
- Eigate Aspire Atlantis: These work well, but I can't recommend these right now until they sort their coil situation properly. They've said they are switching to cotton from fiberglass after lots of pressure, but haven't given an ETA. I'll point you to this thread which you can skim to better understand the issue and make up your own mind:
http://www.e-cigarette-forum.com/fo...ficial-statement-atlantis-coils-material.html
Aside from the whole fiberglass/ceramic paper thing, the only real downside to it is that it doesn't so as well as the subtank at lower wattages, so it blows through eliquid quickly. Since it has a smaller eliquid resevoir, that can get annoying.
- Kanger Subtank: Vapor is about on par with the atlantis, having much more at lower wattages but just slightly less at say 35w, and can even be used on the MVP/MVP 20w, though at 1.2ohm it'll be hard on the battery. Considered to have better flavor, and also has a rebuildable tank module to turn it into an RTA.
The only real downsides are that (1.) it's 28mm, so it's really large, and (2.) some are reporting that with the rebuildable tank module (not the coils, this is where you wrap your own coils) the insulator doesn't handle severely caustic eliquids well.