I plan on comparing them in a week or so, Diver's on the way. What mod did you do on the Killer. I agree about fiddly, but sometimes it's amazing, and others Meh... I'm still happy with it and getting real good at adjustments as needed. Have a Prive Special on the way too, hopefully that top fill will allow me to set it up good and have to change the settings less often.Right now the Diver is way ahead, they are both vaping great, but had to mod the Killer to get it great and it is a lot more fiddly. The Diver is a stright forward set up, , air channels cut into the 510 threads, no juice adjustment, fits in the tank, no flooding or dry hits and this thing hits awesome. So, after an hour and a half now...I'm a big fan ! Ask me tomorrow ? lol