A game like Rock Band is all about the music. More tracks equal more fun. Of course you want the right songs and for me this pack had them. Normally I would just download different songs I like but I tend to like most songs on this pack so it was worth it to just get the whole pack.
So take a look at the track list and if you like a majority of the songs then grab it. If not then just download the ones you want and save yourself some cash.