Gulfstream G450 for sale / Range: around 4,300 nm in published comparison data / Passengers: typically up to 14.
The G450 is the more speed-and-range-focused alternative. Its cabin and operating profile are different, and buyers comparing the two should look at the actual mission rather than simply circle the larger range number on a brochure.
Dassault Falcon 900EX /
900LX for sale / Range: the Falcon 900LX is published at 4,750 nm with six passengers and NBAA IFR reserves / Passengers: up to 14 depending on configuration.
The Falcon brings three engines, a wide cabin and more published range. The 900LX also has a higher certified ceiling and the EASy II flight deck.
For an owner who regularly works longer international sectors, this is a very serious alternative.
Bombardier Challenger 605 /
650 for sale / Range: roughly 4,000 nm, depending on variant and mission assumptions / Passengers: generally around 10 to 12 in executive layouts.
The Challenger has a wider cabin cross-section, while the Legacy 650 gives you greater cabin length. That difference is easy to miss when comparing specifications on a screen.
If you value elbow room, the Challenger deserves attention. If you want a long cabin with several distinct seating areas, the Legacy starts looking very attractive.
Bombardier Challenger 850 for sale / Range: roughly 2,800 to 3,000 nm / Passengers: up to 16.
This is one of the more natural comparisons because the Challenger 850 also comes from the regional-aircraft world and gives passengers a very large interior.
The Legacy 650 for sale has the important advantage when the mission stretches toward 3,500 to 3,900 nm.
Gulfstream IV / IV-SP for sale / Range: figures vary by variant and operating assumptions, but the GIV family sits in the same broad large-cabin category.