So I just got my 510 cartos in last night, and I have to say... Im impressed! I do find that on a standard 510 batt the draw is VERY airy and is kinda loud. However, once I put in on my 3.7v box mod the draw became whisper quiet and much more dense. I think I love these things! I have 2 more boxes and a regular atty on the way, but I highly doubt the regular atty will get much use unless I run out of cartos. I have heard alot of bad or at least mixed press on the 510 carto lately, and I wonder if vendor matters. Maybe they are all getting them from different distributors, but I can speak for the ones from LiteCig! THESE ROCK!