I just bought a single .2 occ coil head for the Kanger subtank from my local b&m. I'm really digging it! It's a pretty hot vape. Even with high vg juices it still chucks it nicely. I have a ipv3 and was using the .5 heads and the rba but started to get board. Now I can use my pv to its full potential 50-75w. I was wanting a different sub tank but with the .2s I'm very satisfied. Has anyone else tried these heads. If so please let me know what you think.