Bombardier Challenger 3500 vs Bombardier Challenger 650 vs Dassault Falcon 2000lxs vs Dassault Falcon 2000s vs Dassault Falcon 6x vs Gulfstream G280 vs Gulfstream G400 vs Gulfstream G500

All eight are large-cabin business jets, but they split into super‑midsize and long‑range large‑cabin groups. The Bombardier Challenger 3500 and Gulfstream G280 are super‑midsize aircraft typically seating about 8–10 passengers; they offer transcontinental capability in the mid‑3,000‑nautical‑mile class, with the G280 generally edging the 3500 on published range. The Bombardier Challenger 650 is a traditional large‑cabin jet, usually 10–12 passengers, with range roughly in the low‑4,000‑nautical‑mile class. Dassault’s Falcon 2000S and 2000LXS are large‑cabin jets commonly 8–10 passengers; the 2000S is the shorter‑range option (mid‑3,000‑nautical‑mile class), while the 2000LXS extends into the low‑4,000‑nautical‑mile class. Dassault’s Falcon 6X, Gulfstream G500, and Gulfstream G400 are longer‑range large‑cabin aircraft, typically 10–14 passengers; published ranges generally run from the mid‑4,000s to around 5,500+ nautical miles, with the 6X and G500 at the upper end and the G400 slightly below them.