The Cohhilition

So, I just finished the entire Trilogy on Insanity (100% Paragon, perfect Destroy ending) and I mainly did it as Soldier (ME2 and 3) and Infiltrator (ME1). I'm planning on doing a second Trilogy playthrough while waiting for ME:A to price drop/get DLC. Does anyone have any suggestions? Also some pros and cons for the class would be great!

On a side note, if anyone has played ME:A, what class did you pick/is your favourite and why?

Thanks! Made a poll for quick trilogy answers.