These are supposed to be fully compatible with m40x's, but judging from that pic the battery looks more like m402 length. I think this is a newer clone than most people on here would have experience with, and the few that have seem to be grudgingly positive.
Basically, they're weaker than the true smoore in every category, but they're not out and out terrible.
I'd still pony up for the real deal- it's barely 2-3 times as much and will undoubtably last much longer, and perform better during that time!
For the record, m401/2 are my e-cig of choice, at least when I'm not using my dse601 pipe
-edit-
I just realized I didn't read your most recent post properly, and responded to the first.
I'm glad you're enjoying what you got anyway!