Being a confirmed Tootle Puffer, only liking my vapor at the lower wattages, have used the 1.2 and 1.5 OCC coils on my SubTank mini. Having been learning to rebuild the OCC coils (horizontal only, bad at vertical) and the RBA deck, yesterday found a third option. Tried it through the night and all this morning through 3 tanks of juice.
I'm a whiz at building the ProTank 2 coils with 30 Kathanl, cellu cotton, anywhere from 1.5 to 1.8 ohms. Was surprised that you can also use them in the SubTank mini as well. Have used one with no leaking from 3.5v/8.1w and now at 3.7v/9w on the Cool Fire IV, ProVari 2.5, and presently on the VaporShark rDNA 30. It did leak a smidge at 3.4v, so pushed it back up to a whopping 3.5v. Used the middle hole in the AFC. Not a cloud chaser setup by any means, but plenty of vapor to satisfy. Am now up to 10.5 watts/4 volts....Living on the "wild side." Ha!
I'm tickled to find this out as;
(1) coils are cheaper than the OCC's for those who don't or can't build,
(2) I can use these which I can easily build in an emergency or if I get too lazy,
(3) Looks like the tank would hold a bit more juice since the PT coils don't have the big "housing" taking up space, (4) You readily can see the wicking which is much closer to the bottom. Can vape the juice gone., and
(5) I love options!