Call me wimpy, but I still use my PT2s almost every day. I have ordered a couple of Velocity clones, with BF pins, to run on my Smokeless Owl. I tried modding a Nimbus V3 (which in normal RDA mode is not too bad) but I hosed up the center pin. I said "oops"
The Velocities are en route via slow boat. Prolly a couple more weeks before they arrive. Excited to give them a whirl tho - so many have had such good things to say about them!