I have always used compilations as samplers, to get a taste of a style of music or of a particular artist I don't know anything about. They are kind of like hors d’oeuvre, a good place to start before you hit the entree. One of my first exposures to blue note was the compilation Straight No Chaser "the most popular, most sampled songs from the vaults of blue note". I have not listened to it in 5 years at least, but that was my intro to Blakey, Silver, Donald Byrd, and others.