What class should i use for mass effect 2 360 game?

I just beat the first game in 12hrs as a soldier what class should i use for mass effect 2 is soldier any good again or is it the same and should i pick another class?What class should i use for mass effect 2 360 game?
the soilder is pointless in mass effeect 2 becuz you dont even need the assualt rifle because they have automatic pistol if you wanna be a killer at long range with some kool tech power then be a infiltrator or if you wanna be the ultimate biotic bastard then be a vangaurd because you can use a shotgun and you have this new charge power than knockover anything in your way and it looks kool..What class should i use for mass effect 2 360 game?
depends on what difficulty you're playing. I really enjoyed vanguard cuz i like charge, but on insanity charging usually gets you killed. The 3 best classes imo r vanguard, sentinel, and infiltrator imo. also, do you like shotguns, sniper rifles, or do you wants a big *** shield?