Well there are a few options for sam..
SAM/WAR: Berserk, Provoke, Double Attack, ect. More or less a filler sub, can back up tank if necessary.
SAM/RNG: A great dmg dealer at higher levels,(50+) anything below that is pretty worthless imo. Not to mention that unless you spend a few hundred k on ranged accuracy items, sidewinder will miss 1/2 of the time or more.
SAM/THF: A must for HMN unless you wanna use a sword and just 300tp spirit taker your whole life. Great for dmg in SC's and for helping with hate management 60+
Anywho always do what you enjoy the most