I use LR cartomizers most of the time. I've used SmokTech, Boge, and the ones Halo has on their website. I use them on Halo G6 (KR-808D) when I (rarely) use those batteries. I usually have a Boge LR on a 350mAh-450mAh eGo battery, sometimes on 650-900mAh eGo twist. I've wrecked a lot of mini eGo batts from screwing them on too tight, but no other problems.