Bombardier, Dassault, and Gulfstream are all now offering ultra-long-range aircraft that can fly 15 hours or more between continents. BJT took a look at what this means in practice for passengers inside the cabins of their respective Global 8000, Falcon 10X, G700, and G800 jets. For those who need even more space but less range, we also took a look at the ACJ TwoTwenty.