Yarjammer
Wellreadneck
With regards to which roof racks are the quickest to remove I couldn't tell you from personal experience. I think why you want to remove it quickly is equally important. If you are wanting to be able to remove it for when the top is off, I'd go with the MBRP (permanently attached to hard top) or Frontrunner (does involve putting holes in hard top). If you want the option of being able to run the rack with the top off I'd say Gobi, Front Runner, or Rugged Ridge/Congo Cage. The latter style is kind of a piecemeal setup where you have to buy a basket separately. The Gobi would allow you to retain the light bar and still remove the rack part at the rear hinge. Garvin is a similar option, but you would also need to remove the windshield mount since the light bar area is attached to the basket (horrible design IMHO).
Aside from the MBRB option if you are using a hard top hoist, removing the rack is an additional two person evolution and quick may be a very relative term.
Aside from the MBRB option if you are using a hard top hoist, removing the rack is an additional two person evolution and quick may be a very relative term.