My two picks if it were me are the Devore O/96's and the Volti Rival. The Rival is $1,000 over budget and if you are strictly limiting yourself to 15K, than the Razz would be just fine.
I really have no clue why I am diving into this thread-the simple truth is that if you match a good loudspeaker correctly with your amp and room, you will be fine regardless of genre.
Oh, I know why I dived in to this thread. At Axpona one year I heard the O/96's and could not get over how fun they are with rock music.