It's interesting that your dad says the 767 is a great plane to fly, because I've had the same experience with Captain Sim's 767. While I fly the 757 more because I think it looks nicer, something about the 767's flying dynamics makes it fun. It's kind of odd, though, considering the 767 was designed to be exactly (or extremely closely) like the 757 (which is great, because you only need one set of manuals). ;)