I just don't understand why improvements can't be made to something in the .5 coil range 30-40 watts. This super high range just drinks the juice, requires more battery life....I just don't see who's winning anymore.
The juice companies are winning in this situation, I'd say, although the FDA has been making sure everyone loses.
As for OP, there is no point IMO. Not for what you're asking, anyway. You're way more likely to find an RDA or RTA on top of a mech/unreg than a sub ohm tank with factory coils. Not that people don't use those things together, but I don't think that particular pairing is as common as the sudden influx suggests. Meaning, super duper low ohms aren't necessary on a regulated device and I'd be comfortable guessing that most people using true unregulated devices use mostly rebuildable toppers. A number of AIOs and starter devices work like an unregulated device but have power caps or other limits through chips that don't account for the .2 and .15 coils proliferating.
Everyone needs to use what works best for them, but companies are making coils of extremely low resistances at the expense of even mid-subohm range (.4-.8ish) simply because the demand is there, but I think it's misguided.
I just honestly think that lots of people believe the myth that going extremely low is the magic solution to getting more vapor and better flavor. This isn't even universally true with an unregulated/mech, let alone a regulated device, which is why I said the demand is misguided; it's based on incorrect information. But I think newer vapers who read or watch videos online especially see all these folks building/using .1 ohm stapled staggered fused whatever-the-foop and think they need that low of a resistance to get a good vape.
That said, I sometimes build my own .1(5) ohm stapled staggered fused whatever-the-foop, but just recently my partner and I were marveling over the fact that a 2x28g*36g fused clapton at 45W was well outperforming a number of much "fancier," lower res coils. Better vapor, better flavor, everything.
So, short answer as everyone has said, companies will make what people want. It's just kind of silly that so many people feel they need such low resistances in their tanks. Especially since even the best factory heads that are quite that low often don't work well on a fully unregulated device, IMO.
Shrug, though. People can buy what they like. I mostly build, anyway.
