Well, I know people won't like this, but I have a Cloupor mini and have been VERY pleased with it. They're releasing a new version of it that addresses the negative issues with my version and improved on the design. It's small.. smaller than most everything out there. It houses a single 18650, can be recharged via the USB, the new version will be 50w, and has a floating center pin, and temperature control with both NI-200 and titanium wire. The same factor is used as mine, so I am oogling this one right now.
Cloupor Mini Plus.
Now, for those who are cringing, and for informational purposes. There have been some reports of the original cloupor mini catching fire. During their first batch, there was a few pictures released of their mods getting hot and one or two of it actually catching on fire. Before that scares you, I think it was just bad luck on first production runs, the ones after those were perfectly fine. There were ways to check to see if you had a defective version, but the loss of reputation has already been given. So, people don't trust the Cloupor mini based on about 5-6 pictures of their mods getting hot. Cloupor reported that they had about 14 reports of their mods being defective.. they made over 10,000 of them. So, that gives a failure rate of %0.002... heck, we'll round way up and say %0.1 just to be on the safe side.
I still have mine, and it works fine. it's a great device.