So i've been using rda's exclusively for 2-3 weeks, since I am into rebuilding nowadays and rda's are obviously easier to recoil and rewick than protanks. As I first started out rebuilding, I knew I couldn't subohm since I had MVP 20w which only reads resistance higher than 1.0 ohms. So i got myself a 100ft of 32-gauge kanthal wire, which was a big mistake. The 32 gauge seemed to brittle really fast (because of its thinness) that I had to change the coils every 1-2 days. And that was the reason why I stuck with rdas, because rebuilding protank coil every 1-2 days was a pain for me. And then, I finally got sick of brittling coils for rdas also, so I searched youtube and found a brilliant solution - a parallel coil. The durability issue was definitely fixed, (The parellel coil I built a week ago is lasting me until now without much change in flavor, which I am so happy with) along with a huge improvement in vapor production and taste. Then I went on with a twisted coil rebuilding, which seemed to work as well as the parallel coil. And then, somehow I thought of rebuilding the protank with a parallel or twisted coil. I ruled out the parallel coil, since it would take up more space and it just won't fit in the protank coil heads. So I built a twisted coil with the 32 gauge kanthal wire, wrapping it 6 times around 1/32? drill bit, which resulted in 1.4 ohms. The coil fit nicely in the protank coil head, and the result? ...Guys, you NEED to try this. Holy ...., the protank 2 mini chugged out the vapor like an rda. And the protank's issue with muted taste (however subtle that is, but that difference in flavor was part of the reason why I stayed away from the protanks) was almost gone, too. vaping the protank in 9.5w with my 80pg/20vg mt.baker vapor cinnamon roll e juice, was like a heaven. I found some issues too, though. One of them was since the twisted coil is much stiffer and springy than the normal microcoil, the ends of the twisted coil that comes through the silicon gasket of the protank coil heads seemed to be hard on the gasket. I'm thinking the silicon gasket will rip eventually if I keep putting in the twisted coil, probably after 4-5 rebuilds (hopefully). Another issue is that the twisted coil rebuild on protank will DRINK e juice. I usually vape a tank full of protank 2 mini a day, However, after rebuilding, I think I am using twice as much e juice a day. For me personally, it wasn't such a big issue since I have bottles of e juices that are a year old laying around me (probably a good 200mLs of them) and I need to vape them away quickly before they go bad. Anyways, so yes, it's gonna be a trade off. It's less economical, for you might have to get a new coil heads after few rebuilding, and you will use up much more juice. On the other hand, you will get the amazing vapor and flavor, and for those of you who uses 32 gauge kanthal wire single microcoil, the durability problem will also go away. It's funny how I went through all these just not to buy a bigger gauge kanthal wire, but hey, I got to experiment and learn so many cool stuffs like various coil builds and I satiated my I-hate-wasting cheap instinct so it's all good.
