I just recently started using 28 g kanthal A1, thanks to emonty. It has opened a whole new world of vaping. I now have large 28g coils on all my rba. Since there now seems to be an interest in 28g, I guess we should have a thread for it.
A7 7 wrap 1.9 ohm oval coil 28g
Vivi Nova 6 wrap 1.8 ohm oval coil 28g
DID clone 10 wrap 2.1 ohm round coil 28g