One of the things I'm looking for is smaller/lighter. Something that can take 21700s is probably not what I'm looking for.
I think I may give a Vaporesso Gen Mod a try. I'd been looking closely at that one when the SMOK Mag P3 snared my attention. Don't know why I didn't think of it this time around.
In the meantime: I've reached out to Tony B to see if he has any comments on the Swell's TC limitation. I'll let y'all know in the thread I referenced above what, if anything, I hear back.
The RX 2 Dual is a dual 18650 mod, same as the Vaporesso GEN. The GEN is made of aluminum, very lightweight and durable─although not IP67 so not waterproof, but barely weighs heavier than the single 18650 Geekvape Aegis solo after the batterie(s) are installed, lol─and the bumpy silicone layer keeps if from attracting sweat/grease so it really does feel nice and comfortable at all times. I'm not sure they fixed the TC problems in the firmware with the GEN, there have been many reports from buyers of this mod all saying TC is useless on this mod... it works well in power mode, though, and TBH power mode is all you really need because TC is just a waste IMNSHO. Even, if using an expensive DNA mod it still doesn't vape better so what's the whole point of going for TC? Something to note about the GEN is that the overheat protection, that prevents the mod itself from overheating, is fairly sensitive so not suitable for going outside at times when the weather gets very hot. The reason why I recommend the RX 2 Dual is because it is still a small mod despite it isn't as lightweight as the GEN, but anyway not that heavy, and, with the firmware that I linked to, you can use the (also free-to-download) NFE Tools software on a Windows PC, which gives you the ability to customize your own power curves, as doing that can speed up the rampup time of the coils for noticeably improved flavor performance. Other mods that have a similar feature (the so-called "preheat" feature) either don't allow it to be fully customized so they only give you a selection of fixed presets, or the customization requires you to manually re-adjust the entire set of parameters [that make up the preheat function] each time when you change the wattage on the mod up or down so it is tedious to the point of no one using it as a result from that. Whereas with ArcticFox it is auto-adjusting itself on-the-fly so it automatically scales with your wattage setting you set on the mod. Nothing compares.