I bought 4 of them to try out. I liked them so much that I bought 8 more.
I've only been using mine for 6 days but so far no leaks and the flavor and vapor are excellent.
The only problem I have had so far is that one of my mini clearomizers won't screw onto my X2 battery. It fits my Volt Spinner and my Volt 78mm
batteries just fine but it feels like I'm stripping the threads when I try to attach it to my X2. Other cartos and
tanks fit my X2 with no problems. Fortunately, I only use my X2 for a backup so it's not a big problem for me.
Aside from that one minor issue, these things are great and I plan to use them daily and
buy more as needed.