The Convair 880 and 990 would be the best next plane for Captain Sim. Captain sim is my favorite developer by far. NOBODY has developed a payware version of either of those planes and the only ones out there are for fs2004 from HJG lacking VC's and modern sim functionality. They would have a monopoly on the plane like they did with there 707 since no one has done a model of either. I also wish they would do the earlier versions of the 707 as well as the 720. :D  ;D  ;)