The 8,000-mile-plus range of the Gulfstream G650 (912.965.3000, www.gulfstream.com) puts it in a class by itself, one that could be called super-ultralong-range. The company designed the G650 based on input from Gulfstream jet owners who asked for an aircraft that would fly farther and faster than any other model and have a quieter, roomier cabin. The G650 offers all of those features, and its cabin has more natural light and better pressurization than that of any other Gulfstream. The jet can achieve a top speed of about 620 mph, and it can reach an altitude of 51,000 feet, but its cabin pressurization makes it feel as though the jet is flying at less than 5,000 feet. The cabin is 6 feet 5 inches tall and 8 feet 6 inches wide. At nearly 47 feet long, the cabin is noticeably larger than that of the ultralong-range G550, and it has larger windows. Completion options include a stateroom that can double as a private office, as well as a bedroom, a shower, and lavatories forward and aft. The G650 is priced at about $64.5 million, and orders are backlogged into 2017.