Forum:Best class in ME3 single player?

So what are ideas or opinions for BEST CLASS for ME3 single player?

I played ME1-3 originally male Soldier class. 2nd playthrough as femshep, Infiltrator. ME3 I think a change is in order, probably last play. I'm playing Multiplayer as well... so had fun with each class but I am not a super gamer. I'm not hyper-fast so 5 headshots in MP is all I can do.

Thinking of Sentinel, as having biotics (Warp, Throw) plus tech (Overload, Cryo) both will allow FREQUENT COMBOS with various other squad members.

So... ideas or opinions and WHY? Not just your favorite, but the reason or your experiences.