I'm actually considering a Kabuki, but it seems awfully pricey. If I could maybe find a good review of it, I might take the plunge...all I have really seen is a blog post calling it an expensive nautilus and criticizing the use of an allen wrench to adjust airflow, which seems kind of petty to me, since once I find a setting I like, I tend to leave it there, not to mention that it is annoying trying to twist off the tank bottom to refill and invariably messing up the airflow settings anyway.
I don't really ask that much from a tank, just:
1.good flavor (I like vapor but I don't need clouds)
2.easy to refill
3.won't leak (as I mentioned, after 3-5 days my subtank seems to leak through the airflow holes)
If I could be fairly sure that it did those things, then I'd part with another bill for a Kabuki and some coils.
Stealthy, I was skeptical of the Kabuki too. Nautilus and Nautilus Minis had been my main tanks for probably a year. Then I had started having the coils die after one or two tanks, and I was only vaping at 10 watts or so. When Kanger came out with the 1.5ohm vertical coil, I thought this is it. But every Subtank Mini I bought leaked. Then I figured out one could buy just the base and add a plastic bell cap. I didn't much care for the looks, but it didn't--or didn't until i started going from my 70F office to 100F Texas heat, and the damn thing would be running all over my hand after one minute walk across the parking lot.
I tried the Aspire Triton. What bomb. But the 1.8ohm coil wasn't bad, so I tried it in a Atlantis 1. Worked fine except that coil really ran through the juice.
One night a few months ago I saw an interview with Zen on the Vape Miser's Youtube channel. What Zen said made sense, so I ordered one from ProVape. Best purchase ever. So now I have six, and another one coming with my Radius order, and I might buy one more. It meets your requirements:
1 Flavor beats the Subtask coils (and Triton coils too) by miles. And I cannot explain it, but the flavor is better in the Kabuki than it is in a standard Nautilus tank.
2 Very easy to fill and to clean. It's one of the few tanks that I can fill with my shaky hands and not get juice everywhere.
3 It won't leak. It passes the AC-Texas heat problem so well that most of the time I keep a P3 Ti in 18350 mode with a Kabuki in my front pants pocket most of the day.
I know they are expensive, but I think they are worth it. Buy one and see.