I build vertical coils in it. Works great in triton and saucecode. 3mm seems to work better than 4+ mm coils. Too big and it will gurgle.
Best thing about triton rta is how easy and fast building vertical coils is. Tip: use 28 gauge (30 sometimes pops/cuts the wire when you use it), and tighten the bottom screw first. Wrap a coil, bend leads up, wrap cotton then place in rta. Requires more watts than subtank mini, but much stronger vape.
Once you get past gurgling on certain builds and find the sweet spot, it's perfect.