I like music with lyrics more in general, but I don't think that's due to a need for lyrics on my part but instead a preference for a verse-chorus-verse structure that's far more common in songs with lyrics.
That said, there are many good instrumental groups out there. Aside from the standby genres of jazz and classical, I also enjoy Flying Lotus, Explosions in the Sky, and because I can't understand what they're saying, I'll include Battles and Sigur Ros as well.