Soldato
The Sigelei 213 has been getting bad reviews and Sigelei themselves haven't exactly covered themselves in glory.
If you fancy the Crown (and I do recommend it as it's a really great tank) then get it.
For a 2x18650 mod I'd get the Joyetech Cuboid. Joyetech have been great with continually updating the firmware and it does everything you could ever want short of a DNA200.
If you fancy something a bit more in depth then I can highly recommend the Hcigar VT133 which is a dual 18650 DNA200/133 device. Well built and will deal with any wire you throw at it and looks the part too.
Most reviews I've seen have been praising the 213?
There was only one negative one and to be honest I don't think the user knew what he was doing.
My 213 has not missed a beat since I've been using it. Temp control works perfect. And for a 2 battery mod is very, very compact.