Personally I love both correctly restored concours and unrestored, and both are rare and valuable. Just look at the market for a concours or true time capsule. There are so many segments to the hobby that no matter your taste it's there for you from Survivor, Concours restored, Protouring, Drivers, Rat Rods, Barn Finds etc. They are all good and appreciated by some segment of the hobby.
Right now I'm enjoying my drivers. Bruises and all I can take them to a cruise night not worry about someone touching or weather. In fact last week was caught in down pour with my orange RS/Z and waited it out and had a nice dinner. Like I said there's something for everyone in the hobby, and that's what makes it great.....