I have two Mutations built with Ni200 26ga, 13 wraps on a 3mm diameter. They are metering different, but around .093. My V2 has the triangle grub nuts, but they are way more stable than the V3 with Phillips. The build on the V2 is steadier. It's all about getting the build secure and wicked and tightened up. Temperature of the atty from just handling it, to sitting overnight will change the resistance some, if it's the same atty you can just vape, though. The resistance dropping is the main thing that tripped me up, but I think all is well now. It's nice that all settings are saved through battery changes like the Mini 2.
Coils are huge being non contact and 13 wraps, but they fit in there. I have it at 420 degrees, but for the atty that dropped resistance I had to turn it up to high 400's. I use rayon, which I believe has a bit higher combustion temperature than cotton. Just mess around, you could probably do a few less wraps. The coils shift easily, it's soft wire, but 26ga I don't find to be as difficult as 30ga Kanthal.
I like what I would assume is a hot vape for most. I stack restrictive O.G. Kayfun drip tips on my RDA's to condense the flavor and heat up my vape. A Mutation delrin drip tip alone is too cool, and very lacking in flavor for me no matter the build, if that gives you an idea of what I vape like. Power I'm running duals around .4, and 55-60 watts. Moral is, It's hot enough to be very pleasing to me with TC, so you can have heat even, and still benefit.
I've definitely noticed that it's not just dry hits, but a consistent temperature that helps. Blasting 60 watts at a dual coil even without dry hits is definitely heating juice up quite a bit. The TC just constantly is pushing and pulling back on the power to not exceed temperature. It's a cleaner taste I think. I'm thinking it might help with some potential issues of juice heating and changing in the safety of flavors being inhaled. Pure speculation.
@TheBloke has helped me in this thread, thanks man, BTW. I associate a lot with his last post. I never liked RDA's until I got my iPV3. I hated having to drip and always taking shorter pulls when I thought I was close to dry. I was Kayfuns all the time. Regulated mods have made me not touch my Kayfuns, and this TC just kinda makes dripping mindless. Aside from over dripping, just vape until you have less flavor and vapor and re drip. As mentioned, keep at it long to dry the wick out. I can get the rayon almost dry essentially, to the point of vaping a light yellow juice until my wick is white again.
If you enjoy RDA's, I'd say use your go to set up, just use the Ni200, and you'll get it down to what works for you. That's what I did, go to atty, and drip tip setup, Ni200 build, and goodness. If you don't like RDA's, a lot about TC might tip the scales and change that.
Long ass post, I do that. Maybe a building thread dedicated to Ni200 and specifically the iPV4 is a good idea. Too much of me and others frustration at vendors and USPS to sift through in here, lol.