I will say the super-minis you'll see first in part 4 of the Library guide are very weak models. Almost everyone who buys one ends up buying something better within a month (including me)
I recommend you look at Joye 510 (short battery life ) through Ego or Riva 510 (fat battery very long battery life)
and
KR808D-1 (see also Vapor4Life.com)
Those are the most popular and most supported 3-piece and 2-piece models and are well supported for adapters and new styles of blank cartomizers