We went thru the same deliberation that you are.
White Hawk pros:
Bigger storage space under front. Front fridge will make up for loss of smaller main fridge
Entertainment center better position and possibly holds a bigger TV (We have 39" Visio)
Bigger bath. We like the fact that the bedroom is isolated from the living area, noise wise, from the living room
Bath acts as a buffer. Big closet in bath
Wanted stand alone table and chairs - not available in Jay Flight
Has no bedside tables under wardrobes, which I really miss.
In the 26BH we had you could put a waste basket under the sink, not so in White Hawk
Tanks a tad smaller. Wish we had about 45 gal grey tank.
Lack of windows in the ends of slide not a problem. Back window is quite large and so is window over table
Lower ceiling height does not bother me. I am 6'. Actually better for DW who is only 5"1" for light switches on ceiling.
New White Hawks have higher ceilings, comparable to Jay Flight.
We bought a Sleepnumber bed for our 26BH and transferred it to the White Hawk.
We got the added insulation package and 15,000 btu a/c - both good choices
Other posters have complained about the amount of flex in the White Hawk floors vs the Jay Flight.
Given the extra weight of he Jay Flight, it probably has a heavier duty construction.
All in all we are quite happy with the White Hawk and would change very little about it.
2012 Toyota Tundra 5.7 Litre DoubleCab
6 speed, 4.30 Limited Slip, Tow Package
2013 Jayco White Hawk 27DSRL
2010 Jayco JayFlight 26BH sold
Yamaha EF2000is Generators (2)
1996 Honda CB750 Nighthawk