Gosh, a tough one.
The Coolfire 4 plus is a nice thing. Inbuilt battery, no TC.
The eVic mini is very nice, external battery, TC, really small for what you get.
Sigelei 30w is cheap these days, bigger (noticeably so) but probably better than Mini Cloupor. Sigelei 75w is nice too.
Today, I've been using an iStick with a Nano.
Yesterday, it was the eVic with a subtank (homemade one using Fasttech parts) and I swapped the eVic for a 40w iStick to take down the pub.
This afternoon (later) I might well put a Kayfun on something and vape a little 'more relaxed' at less watts.
There is tons of good stuff.
I wouldn't personally buy the Rolo (Reuleaux) because I don't need anywhere near that battery life (I don't even 'do' 2 battery mods). It's a lot of money and even if you buy it from "Joyetech/Wismec UK" shop you'll get a paltry 60 day warranty.
if you can wait for China, Mini Cloupor is dirt cheap (under £20)
I *personally* don't trust any Chinese mod to necessarily last very long. That's why I don't buy £60 mods anymore. Mini eVic VT was £35.99. If it dies after the 60 days, the bin is the place for it.
Next purchase for me is a "mech" box mod. Need to finish the arsenal by May 2016.
Money buys complexity and power, not better warranties unless you double or triple your budget and buy something truly warranted. Even then, the cost of returning (from the UK) might scare you.
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If Coolfire 4 plus kit has an atomizer promising "leak free" then that tank will also be available to buy, stand alone - iSub Apex.
I might just try one, you know. On a Sigelei mod.
