I found both Battle of Los Angeles and the self titled for under a tenner, so I got em both. Self titled is easily the best - Wake Up (the matrix) Killing in the name of (san andreas) and freedom are brilliant.
Guerrilla radio and sleep now in the fire from BOLA are the best on that album, not quite so impressed with the rest though.
Self - Titled album was good, the others were just… not. Wake Up though is a great song, personally I think they focus too much on the Rap for my liking.
If you like RATM, try Audioslave, very similar… well… same band just different singer.