It's good to listen to lots of different stuff, just whatever you like. The first two records I ever bought were Alice Cooper, Killer and Jethro Tull, Aqualung. That's two weird records to begin with, but I think they hold up well.
James HetfieldA lot of modern amps and preamps sound great when you're jamming by yourself, but don't hold up in a band situation. The sound isn't dense enough, and the lows and highs tend to get soaked up by the bass and cymbals.
James Hetfield