I do agree that KOL has really softened up since they got big. All the true fans love their old shit - and they hate to hear that. They're all happy, with families and married to models now - what do you expect - the angst is gone.
If you are going to check out Cage, I think as an advanced musician you would probably appreciate Alternative album of the year winning Tell Me I'm Pretty the most which I love, but my favorite is the rockus self titled 2008 album.