I get that drop of condensate too, but other than that I've never had any leakage through the airhole, and that is the only tank I've ever used that did not piss me off over leaks, including the Nautilus. And my 510 pin at least sometimes gets wet with any other atty I use, dripper or tank. What tank are you using that never, ever leaks, anywhere?
The P3 is also a better electrical connection because it eliminates the pin (usually a screw) between the factory coil and the positive pin (the coil making direct contact with the positive pin). The fewer mechanicl links in the electrical chain, the lower the internal device resistance. I think all that's worth a drop of condsate on the pin. Trade-offs, but well worth it for me.
What I really like about the P3 connector is that you can remove the 510 adapter and more easily clean out the connector, and then soak the adapter parts in alcohol and otherwise clean them up. I like to use a rubber eraser to clean the contact pin and other electrical pins but a No 2 standard eraser barely fits in a 510 hole, and the erasers are barely tall enough, such that after a couple of cleanings I have to throw the pencil away and start with a new one. And at best I can barely twirl it, where in the P3 connector I can scrub it more vigorously. Because of that my P3 connectors are better maintained.
I also liked the fact that when Provape was in business, a galled 510 adapter could be easily replaced. But now it's a fairly expensive stockpile item
"I still got the Subtank with teeth marks in it from the huge pliers that were required to break the locked up attie and ring set. "
That's why you're supposed to use some cloth or a rubber jar opener under the plier jaws
I've never tried to lift the beauty ring because all that does is put that tiny gap below the beauty ring, rather than above it. I'll be sure never to that now! I can't visualize why that would lock it all together but I'll take your word for it.
I like the Kabuki a lot better than the Nautilus, better flavor and a little better airflow. I've never tried the 0.7 BVC coils but have a pack in the mail. I think that will give even better airflow?
I normally vape a dripper at about 30W, but that can't be done on my P2.5 or P3, and if I do that on my Radius I go through batteries too quickly to be practical. So I need something like the Kabuki (a Tootle rig) to make the P2.5 work, and I need to run 10W max to make the Radius work at all, except at home when I can rotate to a spare.
My favorite dripper, for flavor, are my Royal Hunter Minis. They are similar to Derringers but better than the clone I own. The Kabuki, at about 10W, actually delivers slightly more flavor than the RH at 20W (configured as double simple 27ga, 3mm ID, 7/8 wraps, dual coil). Although the Kabuki doesn't have as much airflow as I would like, at least with the 1.8R coils I've used (that measure out at 2.0-2.2R). Considering that the RH is the most flavorful dripper I've yet used, I'm impressed.
If I could find a rebuildable tank that is as leak-proof as the Kabuki, with as much flavor at about 10W, and more airflow I would buy it. But I really don't want to spend $500 chasing that.
My two big issues with the Kabuki: factory coils. I like to minimize my consumable cost, and deeming is a big issue, although that may be put off for 4 years. The other issue is that while the quartz glass tubes are very nice, they are 10 bucks apiece and I broke mine after only about 3 coils. After reading all the other complaints in the big Kabuki thread I started to think of the tubes as a very expensive consumable, along with the coils. Kind of like buy a tube with every pack of coils

. I did see that Provarifuel sells a 10 pack of tubes for $70, which is a more realistic price. And I might need a stockpile like that
Mine cracked at the top of the tube and I then decided not to separate the atty top from the tube unless I have to, and I'll see if the tubes last longer that way. And there is probably no compelling reason to separate the tube for routine cleaning.
Anyway, that's my Kabuki/P3 story. If you've found something otherwise comparable I'd like to know about, RTA or not.