so, i tried vaping in Oct of 2009, started with the RN4075. I didn't get much out of it. I was a 2 pack a day + smoker. stoped for a while (3 years) picked it backup about 2 months ago, with a screwdriver and black silver bullet complemts of a friend who has been vaping fro 3 + years. it still wasnt doing it for me completly. than 3 weeks, 6 days, 4 hours ago, i acquired a reo grand !! since than i have not had an analog !!! yeah to me. i hope i can continue, wish me luck.