So got a Zenith, had a it a few days now, and seems good - nice smooth vape, not necessarily more flavoursome than my previous tanks (Nautlus X, T20s, T18e) but very consistent, coil seems to wick faster than Nautilus X, and time will tell if coil life-span is better than other tanks.
HOWEVER... after several days of no problems, today, for no obvious reason, it started LEAKING big time - found quite a few threads with people with similar problems, tho the overall consensus seems to be it should be leak-free - have taken it apart, can't see anything wrong with o-rings, was definitely screwed together tight etc so don't know what's wrong, but it's a bit disappointing that I haven't had this problem with any other tank (save once with a dodgy pack of coils for the T18) and this tank is sold as leak-free... I guess it's possible there are some defective ones here and there? My only other though is maybe I've inadvertently loosened the base as I've been playing around with the air-hole settings a fair bit. Or just unlucky with bad coil?
Anyway, will persevere for now, but if it keeps up the leaking will be returning it (presuming that's possible) as the whole point of investing in a this tank was for it to be genuinely hassle-free...
Vaping 50/50 6mg liquid in it btw, and at 12watts (1.6 coil)