i ordered the 555 and the marlboro medium blend 30ml's......you can refill them with the same flavor. how often you clean them is prob up to you. from what i've read 10-15 fill ups on one cartridge is as much as you want to put through one. its up to you if you want to run different flavors through the same one. it might make for a tasty treat, then again it could taste like roadkill lol. i figure ill clean mine about once a week.
Sweet. Thanks again man, I just put my order in there. 10mL [low] Mocha and Hawaii Punch, and 8 blank carts.
I'll let you know how it is!