The Dauntless variants are interesting, as each person prefers one over the other. RC for example really swears by the lance one, however Horizon likes the torp one.
For me it depends on the size of the game, as like Horizon said, reloading is an issue. The larger the game the lower priority reloading a dauntless is, therefore anywhere 1500+ I will usually be using a lance dauntless whilst playing IN, however smaller games I prefer the torp version.