My first choice:

[carguy_]

Luftwaffe, ofcourse.
In IL2 days I flew LW for the same reason I always flew the Emire forces in Star Wars games. Also, imo the German machinery is the best in the world. When I buy anything (I mean anything , a blender, trousers, you name it) I always prefer made in DE label. Through the years though I learned so much about the German WWII planes and I grew to love em even more. To add to that they always have fit my style of flying - I don`t really enjoy a T&B fights as much as outsmarting my enemy, attacking him unnoticed.
I must say that the Battle of Britain tempted me a lot. It`s the connection with Polish pilots I wanted to feel. Finally I reserved that for offline, while in online flying I consider myself a very good pilot and supporting the fellow Luftwaffles in online wars is the only natural thing to do. Not to mention hearing from the old LW buddies I haven`t played with since 2007.