So every time someone mentions Yocan, I twitch. Badly.
I had planned back in 2014 or 15 to switch to a full e-setup using the Yocan Nero system because of its reported rapid heat up time compared to most the coils on the market back then.
So this was the first (and last) Yocan item I got.
There was supposedly going to be an e-nail option for bongs that ran off the system too and a dry herb companion, AFAIK they never got the latter two on the market successfully. The rapid-heating foil atomizer was the selling point and the major failing point. At the time you could only get the atomizers from their website or e-bay store and they were $25 for a pack of 5. The also awlays blew the foil within a week usually a day or two, sometimes on the first use.
Turns out the foil would contract too fast if you were in a remotely chilled environment, like outside in Nov. at a festival or in an air conditioned room. So I found that using it in my favorite air conditioned spot would almost guarantee that the foil popped, in the car not even a chance it would survive the fast blowing cold air of the AC, all I had to do was pass it in front of the vent setting it down and you'd hear a faint click of the foil breaking from the temperature change. At a fest. in Nov. I went through almost $75 in coils at the 4 day event because it was just too cold for the dab-saber (our nickname for it.)
When I gave up after a few months, I called the Yocan line and left a message, they never responded in any way. So I started firing them emails, after about the 6th one, they sent me an empty email that had nothing but a $15 gift certificate to their website, and nothing else.
I ended up chucking the thing in the trash in a rage and getting a $15 4v pen top from the headshop with the coils wrapped around quartz, it sucked and was a mess but at least it lasted more than a week.
I'm not sure if I'm at the point I'm willing to go back to trying them. I've got pretty much all my dab gear electrified where I want it, and flame powered where I don't.
I have to admit, the thing was a tank and felt like you were taking a dab from a lightsaber, which was really intimidating for people who'd never seen a dab pen of any kind before and fun for me. If it didn't have an upkeep cost of upwards $100+ a month to run, I would have loved it. The lack of customer service just put me over the edge.