Comparing The Gulfstream G280 and Bombardier Challenger 350 Super Midsize Jets The Gulfstream G280 and the Challenger 350 are both super midsize jets that are ideal for 8 or 9 passengers. They have cross country range and comfortable interiors with plenty of cabin space. However, there are some slight differences between two of the bestRead the Rest “Challenger 350 vs Gulfstream G280”