Mmmmm Me Likey!!! I've been trying every 510 atty or cartomizer I could find to get my "place of happiness" with the Hello 016. Well...it was because I needed to fiddle with some "adjustments". I had lost my 510 to 901 coupler for a while but found it last night in an old purse I was cleaning out to give my daughter. So I grabbed a well broken in 901 atty I'd set aside, and fired her up with the coupler tonight and WOW... All the TH and what I call lung hit I've been missing. It's going to be my normal set up from now on.