Yeah...7500 lays down slick and like glass, but I always seemed to get too heavy with it and cause it to solvent pop.
I lay down UC-35 down heavy (following the spray directions of course) and seldom get a solvent pop.
Out of all the Dupont clears I thought 7500 had the best shine. There was a higher quality Dupont clear, but it was nearly twice the price. I never had any brittle issues with 7600, but heard the horror stories about rapid curing clears. I also heard 7600 was best for smaller jobs.