I just finished building my own RBA with 5 wraps of 26 awg kanthal and got 0.74 ohms on each build. Still going strong and I've been chain vaping, since my store had a big sale on liquids and I got some new flavors, haha.
As far as I can tell, subohming gets the coil hotter, quicker, but drinks liquid like crazy. I am also looking for wisdom from some of the vets here!
Currently, I use the Kanger Subox.
And, of course, welcome to ECF!