Hello Simo

Welcome to ECF, For me the fav's are dark horse, derringer, and i have to say the royal hunter is making its way up my fav list, the dark horse a great all around rda, tons of airflow options and you can either use the chuff or your fav 510 driptip, the derringer (with a pair of claptons) for my taste the flavor is just incredible, the royal hunter another good all around rda, it has a honey comb tip to reduce/stop spitting, airflow is a little restricted from the darkhorse due to the honey comb tip, but still a very nice vape, and for an authentic the price is realy good. hope that helps a little, Happy Vaping!