I ordered a Blu in the beginning of Dec. Quickly tossed that for a 510. The 510 just didn't cut it. So I did the research and settled on the V2. I hit a 6v
device a couple times, a bit too much for me. 5v is truly the sweet spot. I don't know what you do as far as carts go but HV
devices are easy as long as you DRIP only. I ....ed with carts for the 1st 3 weeks I had the V2. Then switched to the 901 atty and started dripping only. All problems out the window. You get any HV attys? I'm pretty sure they just drop 6v mods down to around 5v so you dont burn through attys. I lost 4 in 3 days before I figured out how to hit the damn thing. HV devices are a tad tricky