Slow Time and Marked for Death are my 2 most used shouts, which one gets used more depends on the character. --- "I love nailing Asari, so ageless and superior. Then you get them and they squeal like schoolgirls"- Gianna Parasini, Mass Effect 2.
unrelenting force. its just useful for every single character and every playstyle. its got a really short cooldown. the single word shout is useful for a quick interrupt or stagger. helps close the gap on casters and archers, while keeping the cooldown short enough to allow a second one shortly after.
the three word is great for crowd control and as a panic button so you can heal up and have a breather.
i actually get thrown off if i have something else equipped since i always assume i have unrelenting force equipped. --- Gamertag: Clonedzero