I'm a hardcore HALO girl, but I wanted a 102mm battery cuz I used to smoke 120's years ago, and HALO only had it in black....so...I, Oh can I dare say it? I went to Bloog, after checking out SmokingJoey's compatibility chart, and they had the most gorgeous purple one! I swear it's the twin sister to HALOs' purple, just a tad lighter. Now I feel like I've abandoned my firstborn in a parking lot or had a torrid affair! HALO is my 'first love' from way back when, when I was a 'vaping virgin' (3 wks ago)....hehehehe. I promise I won't do it again! Oh! the product loyalty guilt!!!!!! (maybe I'll only vape it at night....in a closet... where no one can see me)