I'm about to pull the trigger on a '13 Edge. I'm teetering between the Sport & Limited models. I LOVE the look of the Sport, but I worry that I may tire of the stiff ride on the 22s. I've driven a Sport with the 22s, and a Limited with the 20s, and didn't notice much difference in ride quality. Do any of you regret getting the Sport model because of the stiffer ride?