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

All seven are business jets spanning super‑midsize to large‑cabin categories. In the super‑midsize class, the Bombardier Challenger 3500 and Gulfstream G280 are closest peers, typically flying about 3,200–3,400 nautical miles with around 8–10 passengers in common executive layouts (up to roughly 10–12 depending on configuration). Moving into large‑cabin “small”/long‑range large‑cabin territory, the Bombardier Challenger 650 carries a similar passenger count (often 9–12) but offers more cabin volume and a longer typical range near 4,000 nautical miles. Dassault’s Falcon 2000S and 2000LXS are large‑cabin jets sized for about 8–10 passengers; the 2000S is the shorter‑range member (roughly low‑3,000‑nm class), while the 2000LXS stretches farther (roughly 4,000‑nm class). Gulfstream’s G400 and G500 step up in capability and speed-focused large‑cabin performance, with the G400 around the mid‑4,000‑nm class and the G500 near the 5,000+‑nm class, typically seating about 10–13 in many layouts. Figures vary by cabin fit, payload, and conditions.