Yannick,
I have the 767-300 and Freighter, the 757-200 and freighter, the 727-100, the 707-300, the B-52, the C-130 for FSX, and Weapon. I couldn't really say what my favorite is, but it's either the 767, the 707, or Weapon. They're pretty different, so they're hard to compare, but it's probably the 707.