Gold Edition Vs. Deluxe & Accleration

Does anyone know if there is a difference between the Gold Edition and Deluxe & Accleration? I just bought am X52 joystick the Standard version and Accleration two weeks ago on a whim because I wanted to start playing flight sims again. The last one I played was from 1994. But I'd really like to get the deluxe version because of the added missions and the few extra aircraft. But I read on wiki (which I scrutinize for its accuracy) that the gold had some added missions. Wiki is the only place I've read that, but I wanted to ask anyway. I don't feel too bad about rebuying the game because a buddy of mine may look into getting FSX and I'll see if he's interested in buying mine at a reduced price.
Cheers!
Cheers!