Its pretty much hit or miss, I just got an order from vapor beast, 10 boxes and so far they are good, Ive only gone thru part of one ramdom box. They had equal size condoms but the center post has the smaller hole and the filling seems like the older ones from about 3 months ago. The bad ones I got had a larger center on post and along the carto and had really airy filling. You could actually see the filler coming off the sides of metal. The ones before that were so tight, took forever to soak up anything and the center of the cartos were off center and some had funky metal wicks that either didnt come up and around the the side and on a couple the wire went down and punctured the center covering. On a couple of the off center ones I actually punctured when I punched my carto cause it was too close to the steel. So its hard to tell from one order to the next. I was paying almost 9 bucks a box at my local store plus gas etc. for the good ones with the long and short condoms. Its hard for the vendors to keep up. If their boge supplier isnt owning up to there being a problems all they can do is try and get reassurance from boge or stop selling them. This hurts us but its also hurting the vendors that sell to us. Im sure if they could they would take returns from us if they could in turn send the bad ones back to boge. I wish the vendors would give great deals on 5 pack boxes like the boge so that we can find something out there we can replace them with. I have used the smoke tech 1.7 single coils and they work fine, but you have to be more careful as 1.7 run a little hotter and if they overly dry on the surface they will burn. I wish more people carried the smoke tech 2.0 single coils those would be great.