I think 50w and higher box mods will become mainstream before the year is out. The Chinese are definitely stepping up their game, there's already the IPV2 50w,
sigelei 50w mini & 100w prototype, and Innokin just partnered with Evolv for a 20w board...and I'm sure that's just the start. Plus you can't forget the SX350 board, it's the best of the bunch as far as Chinese gear goes IMO.
If I was in the market for one, I'd wait until they start releasing the 100w units, as those demand dual 18650's and will give you insane battery life at 50w. One cell just isn't enough at 50w, hell, my Hana only lasts for 4-5 hours of semi chain-
vaping at 30w, lol.
It's refreshing to see them developing their own nice products, even RDA's, maybe they finally realized that the long term potential of clones is nil.
I found some videos of the new Sigelei boxes, it doesn't inspire much confidence, I have no idea why they choose reviewers that don't vape. I guess we'll have to wait until someone stateside gets em' for review to see how they really perform.
http://youtu.be/R606abvcZT4
http://youtu.be/prEo5O3Ze9Y
Notice how the 100w stops firing after a few seconds, and the video jump-cuts. I'm sure they will get it ironed out though.