When you want to rock, you can't go wrong with some of the vintage Infinity speakers. The ones that I know rock for sure are the following:
Quantum 2 thru 5, QLS-1, RSM, RS-1.5, RS-2.5, RS-4.5, RS II (original and A/B variants) and the RS III (1st version).
Some of those speakers have to be biamped. Almost all of the above use the Watkins woofer except for the RSM, RS II and RS III. The RSM is the easiest to drive of the bunch. The RS II and RS III don't use Watkins woofers but they use two woofers crossed-over at different frequencies to approximate the Watkins behavior.