I am currently using the vAir-T .25 ohm type A coils on my Atlantis v2 tank, airflow wide open at the base. I first tried Temp Ni on my Joyetech eVic Vt at 500 degrees and 50watts and had great flavor and vapor performance for 3 ml of juice. I then tried the same setup on my Smok XPro M80 Plus with lack luster results. I wasn't getting very much vapor at all, so after bumping it up to 600 degrees and 60watts on my XPro, I got the same results. Unfortunately, I moved the tank back to my Joyetech to try it's setting again, I am am now getting virtually no flavor...tons of vapor, but not flavor which leads me to believe the coil is shot. I think I burnt it out on the Xpro with the bumped up settings. What I have been hearing on the interwebs is that the Xpro takes awhile to ramp up to perform as regular DNA chip mods do. I am going to change out coils here to see if that is definitely the case, but beware with the Temp control on the Xpro. I don't think it is entirely accurate. Hope this helps.