I believe the Crown Jewel is best for playing the JAPANESE pressing of Pink Floyd's "The Wall," while the Shelter 501 should be reserved for the American pressing !
If you want to play Floyd's "DSOTM" you really should get a Shelter 901.
I always find it humorous when cartridges are advertised as such low hours: I just can't believe many people would buy an expensive cart, listen to it for such a short time (less hours than required for break-in), then decide to resell at a fraction of $$ invested.
I've never seen QUITE such a restricted playlist advertised as the above-mentioned Crown Jewel though.