Got my BT clone from Shenray the other day and set it up yesterday. Did the recommended 5*8 300 mesh thing, stuffed with Miracle Cotton. So far it's performing okay, really nothing special or that great - definitely nothing I'd drop 140 Euros on. However, I'll still have to tinker with it a bit, to do it justice. Being a new system it's a learning curve, which is exactly what I wanted.
So far the clouds are... meager, disappointing. And I say that as someone who doesn't care about the clouds really, but I could have bigger clouds at 35W without throwing 60-70W at it. The flavour is alright, though. Maybe I put too much cotton in there.
One last thing, the Shenray clone is pretty cool, since you get the 510 adapter ready to go with it and an additional acrylic big ol' drip tip! Love that. (Not sure whether that will be the case with all of the Shenray Taifun BTs or just the first batch, so don't forget to ask first!)