Hello all. I just purchased an M401 from newwaysmokes.com. Overall I was very dissapointed in the vapor production and how hard i had to drag just to get what little vapor there was. Sadly i'm returning the product and looking to buy the super mini, also known as the rn 4081. My question is are all rn4081 made the same. njoy has them for like 80 bucks. Pure Smoker has them for around 48. smoke liberation has them for around 55. and ecigarettecigar has them for 50 and that comes with and extra atomizer. Is any one better quality than the other?? I just don't want what happened to me with the M401. Thanks guys.