Dvarw is ok. Nothing wrong with it, and it's my 2nd favorite. My negatives for it are that it's got more parts & o-rings than I'd think it would need, chimney cap sometimes sticks in the tank, sometimes on the deck when disassembling, no adjustable AF, a little more fiddly to get the wicks correct against the holes, and just a little less TH than I like. But it is still my #2 at the moment.
For me, nothing beats the SXK Doggy. I like it better than Kayfun Prime or 5, Siren 2, Berserker, Ares (which are all good mtl tanks). Not only do I think it gives the best vape, it's absolutely trouble free. Never had even a tiny leak or seepage, never a gurgle or dry hit out of it, and I go 100% VG. For MTL, I don't think you'd really go wrong with any I mentioned above though - better than trying to restrict a DL, anyway. Doggy only holds a couple ml juice, but sips it. Yeah, I know it's bottom fill, and I thought it'd be a negative, but it's really so easy it's not even funny. And this design really prevents leaking. At $10, I'd say it's worth a try, anyway.