I am strictly a 510 cartomizer user and am only running at 6v with my V3. Some of my juices hold up really well at 6v while others taste burnt on the very first draw. When I first started out I loved the Johnson creek line. Mostly the Chocolate and Tennessee Cured. I was thinking of trying them again but I need to hear from others using my setup. Let me know which flavors you have tried at 6v and any other tips you can give me.