RSST is one of the easier RBA's to start with, and a great vape. Learning curve wise, I would strongly suggest the Protank 2 or the Davide Glassomizer as excellent top of the line clearomizers. Bottom coils wick better, burn less, fewer dry hits, and are definitely more popular on this Forum. I used the Evods and the Protanks and Davide's before going full time to carto tanks and RBA's now. Good luck!