I'm really loving this so far but I did notice one thing. I'm using this on a noisy cricket at .5 ohms (originally). I changed the cotton because I was going from tobacco flavor to Lemon and before I re-wicked it I checked the ohms and it said 1.3 !! I tightened up everything, dry burned, all on my 521 tab and it still reads 1.3 ohms. I put it back on the cricket and it's firing fine. I'm wondering what will happen on my second build. Actually if I don't have any problems I would say this is probably up there with the Mutation V4 in my book !