Yes, the Jay flights are built a bit better with a real floor and walls opposed to glued laminated walls. But if you like the smooth wall look, you can get the laminated side walls on the Jay Flights while still keeping the joist built floor that's not available on the White Hawk line.
Interiors are the same but Jay Flights have taller ceilings.
Heres the
standard Jay Flight model. It has a lot of upgrades over the swift and the White Hawk, and is still the same price as the White Hawk 20MRB. It is 460 lbs heavier than the 20MRB though.
Each to their own as the White Hawks are an Ultra light brand and Jay Flights are a standard weight brand.