I love my 510 enough that I debated on getting my mom one for Christmas even tho she hasn't shown a great amount of interest in it. Got to thinking, considering she is so non-chalant over the whole deal IF I did get her one, it would be a 2 piece cartomizer PV because I am almost sure the maintenance of the 510 (refilling, dripping, cart mods, etc.) would not be something she would do. But alas I totally had to rethink my idea because like said above, it is a cost that she probably wouldn't keep up on well, additionally she would always forget to order cartomizers, or keep spare parts. So she's just going to get a necklace. I would advise anyone that is considering giving a PV as a present, make sure it is something they are genuinely interested in, and keep their needs and wants in mind rather than your own preferences. My 510 is perfect for me, but I don't think my mom, dad, or neighbor would like it at all and would still be smoking analogs.