Today I found and old Escort 7500 in the closet complete with box and accessories. I remember buying it about 10 years ago, but put it away when I upgraded to the 4500 then 4600 and so on. I don't remember much about how well it worked. It still fires up and seems to pick up the normal falses on a short drive down the road, but haven't come across any radar. Anyone have any experience with this model as far as performance? Is it worth keeping as a backup?