I won't buy a clone that's not "name brand." (never thought I'd say that before I vaped).So I have the Coppervape clone and it works just fine. Then I purchased this guy from fasttech.
https://www.fasttech.com/p/9652193
It was a great price and comes with all the inserts. Unfortunately, I have had nothing but problems thus far with this clone. To start, the Allen key did not fit the post screws. I replaced the post screws with the two extras that were included and they worked fine.
Then I installed a coil and filled the tank, and juice literally just pours out of the air slot! The o-rings were all lubed and look fine. I can't figure it out, but I am not very happy with this clone.
After some research, it appears that others are having the same issue with the deluxe version of this tank, but it is the same manufacturer Lysen. I am sure fasttech would stand behind the clone, but of course they want pictures. I am not sure how you could even document something like this with pictures. Here is a link to what may be the problem, but I don't really know for sure. Just a heads up for anyone considering the Lysen clones.
https://www.fasttech.com/forums/9652194/t/2731742/seeping-leaking-plus-pole/1
I've had SXK, YFTK, SJMY, and Coppervape for the Dvarw. Not a real problem with any of them. But I did try a couple of no-name clones before, and had pretty miserable experiences. The way I look at it, if they don't put their name on it (with the company they're copying!