I'm kinda on the fence about Magnum 500s. They are indeed some of the coolest factory wheels available - WAY better than hub caps and rings (IMHO)... but they are done to death. Everybody [just about] seems to have them. Blah.
Personally, I like something in a 5-spoke design - some look better bigger, some look better smaller. The rims I want are Torque Thrust IIs, wrapped by BFGs... but my mind is open to the Torque Thrust D, Cragar S/S, AR 200 - "Daisy/Coke Bottles," or some Centerlines. I'm more into the 'old school restomod' look than the new larger diameter wheels.
Interestingly enough - rims seem to have the biggest visual impact on a car (short of changing paint colors) - swap on a set of nice, shiny, wider rims on low profile tires from a set of hubcaps and whitewall pizza cutters, and the change is drastic!