For DNA40 temperature protection builds, I've settled on a 30AWG Ni200 build, ~8 spaced wraps around a 1/8" mandrel wicked with KGD. These come in at .21ohms, +/- .01ohm. I've been using these faithfully for the last couple of weeks in my (3) Lemos. I'm mostly flavor chasing, running these around 15-16 watts. TP is set at 400, though I haven't hit it yet at 15-16 watts.
I'm definitely one for trying different builds ... and I've tried many; a good guess would be probably between 25 and 30 different builds. The build described above is fantastic for flavor... if you want clouds, this build also works great; turn up the wattage 20+ and you got it.
As for AFC ... I've completely removed the AFC rings. I don't think they're necessary. If you want clouds, pull hard with higher wattage and you got it. If you want flavor, take a nice controlled slow drag at lower wattages and the flavor is fantastic.
I believe I've found the best of both worlds build for both volume and flavor. This build/Lemo provides both; just a matter of wattage. Even at higher watts, I rarely hit my max of 430F. For flavor, most of my liquids shine between 370 and 400F... and I've also found that viscosity of the liquid is not an issue with the Lemo.
I'm not sure it can get much better than this. I have three Lemos now, and these are my primary devices ... I have not touched my Kayfuns, Genesis-style, or even my magma/GAIA RDAs since I (personally) mastered these Lemos. They have provided a wonderful, adjustable (via the device) range of perfection for both volume and flavor, and when chasing flavor, they're right up with the Magma!
eLeaf has something going here and I hope they recognize it; I'm sure they have with the massive movement of stock (these were difficult to find a few weeks ago!) ... such a simple, yet incredibly versatile atty at a FANTASTIC price ... these things are heavenly.
(slight) disclaimer: I'm not much of an E-Liquid ..... (yet) ... though I did just subscribe to ZampleBox! Anyway, liquids that have been tested in my Lemos so far (that have all been freakin' fantastic): Five Pawns: Gambit, Fifth Rank, Perpetual Check, and *Bowden's Mate; Nicoticket: *The Virus (H1N1), Creme Brûlée, *Wakonda
* = ADVs/Regulars/I have many ml's of these liquids