Green Hornet wrote: » I keep toying with the idea of the killer and tank but just can't convince myself that its any better than the spheroid, and its just so expensive that I wouldn't take a chance on it. I did get the spiral a good while ago and didn't take to it at all. The vape was too hot or something, no matter what voltage I used and my coils were fine so it wasnt shorting. The killer seems to involve quite a bit of faffing and I'm not going down that route again.....the spheroid is pretty faff free except that the coils need replacing very frequently.