When you must choose between two of your favorite bands ever, there's bound to be regret in your future.
When you must choose between two great bands—one from your past and one from your present—there is bound to be regret in your future. I'm sure the line above is paraphrasing a famous quote from somewhere (even if Google is not showing me one), but it accurately describes my situation when I attend the 2008 Lollapalooza music...