Well, we looked at both, drove both, and researched the heck out of both.
What we came up with was,
They are, at the core, essentially the same unit, then the Grayhawk gets "messed" with.
The price goes up more than $20,000.00, and a bunch of stuff that we neither need or want gets added on.
We didn't want the levelers, the ceiling lights where you can't change out the bulbs, the in-dash navigation system, the all but worthless side view cameras and thank-less water heater, etc. The Redhawk also has about 400 pounds more payload capacity, due to the lack of levelers.
All we added to get just what we wanted was 2 slide toppers, and 2 thermostatically controlled roof hatch fans.
I just wish that Jayco allowed the buyers to customize the "Hawks" any way that we wanted. There is too much "one size fits all".