Personally I like the Sentinel in 2/3 the best but in 1 they don’t really have the specific niche purpose that they seem to in the sequels, since all dual classes just get half of the powers from each.
ME1 I just go full Engineer and select AR training.
It’s always AR training.
I will say AR is definitely the best weapon in ME1. As you get into the game you can basically turn it into a shotgun or a sniper rifle depending on what ammo and gun mods you put on it.
Exactly, the thing is just the most versatile weapon and with unlimited ammo using it exclusively is no problem for any class.