i dont really think either is a good investment. how many really nice 500s and escos have we seen for sale and they dont sell. you would have to buy an absolute minter with no miles on it and then be extremely lucky to find a buyer who wants to trailor it to shows or something. i dont think 500s sell now because of what you can buy for the same money [ far more capable cars ] and the old t4 8 injector power is old hat so why pay 12k to 15k for a 500 when a proper 3dr is circa 8k and you have 4k to 7k left to make it quick. all imo of course.