I find the Dan with a better selection but the Dan+ quieter. Seating is slightly more comfy in the Dan BUT the Dan+ has more selection as the Dan is usually really crowded (except at 3AM).
Dan is more convenient when flying out of B/C. Dan+ is more convenient if not flying out of as it's right off the rotunda, so near the shul and duty free and food if with other people hanging out there, and no need to walk down B/C to then leave and head somewhere else.