been trying this vaping thing for a little over a month and really like it. running a 510 from cignot but just got a bartleby today after reading the reviews on here and holy crap it is awesome. Flavor, vapor, everything. Just wish i had found it before i screwed around with the extra batteries and charges for the reg 510! I see now there is another site with a similar mod w/o the built in charger for a few less bucks but this thing kicks ..... Found a loose cig in the drawer yesterday and thought what the heck. took one drag and it took everything i had to keep from puking. Keep in mind i was burning a pack a day for 10 years or so. That was honesty the 1st analog i've touched since the day after i got my 510 kit, and i believe it will be my last. No more coughing and hacking,stinking or freezing my .... off outside for a smoke. Just wish i had found this sooner.