Why all the bickering...
Dassault, Gulfstream and Bombardier all make superbe aircrafts!
When a owner pays big bucks for his aircraft a lot of it comes down to his personal preferences for what ever reasons just like when he would chose a Mercedes over a BMW or Audi.
Pilots also have their preferences and no matter how good the competition is you may want and prefer to fly the other brand.
Just my $0.02.