Favostix is an excellent device
My review is based on only 2 weeks constant use, but I have been vaping for 10 years and I reckon I know a winner (30 year smoker who used vapes to quit).
I have replaced the faithful Justfog Mini with the Favostix after seeking the next best thing. I tried the Caliburn, the Xtra, the Oby and a couple others but nothing could beat the Justfog until the Favostix.
This device has a good battery life, no need to carry a spare for the day out. It has a good juice capacity but does burn it at a faster rate than the Mini, I usually need a top up halfway through a normal day. That said, it is in no way a guzzler. I use the Favostix at 15w, it delivers a good hit and the flavour is at least as good as anything else I’ve tried. I use the manual firing button pretty much all the time, but automatic draw is there if you want it, I find it delivers a less strong hit.
I have not had a single leak in 2 weeks, I can’t recall any other similar device that equals that.
Anyway, I dig this so much I have now ordered 2 more to replace my Justfogs. The only caution I would advise is not to carry it in the same pocket as anything delicate, because the aluminium shell is hard and could potentially scratch anything else in the pocket. But you likely know that any way....