If rock is mostly about volume to you, then get the biggest, baddest, most sensitive (sounds odd, doesn't it?) speakers you can find. Kilpsch, JBL, and CV should fit the bill on paper.
After you've had fun with them and they do all those things, you'll most likely get bored and wish you never got rid of your Ohms.
There's more to rock than SPL and bass slam. I listen to several types of rock, pretty much exclusively. No desire whatsoever to get speakers like the ones mentioned. Why? Because they don't sound good - muddy, bloated, colored, disprportionate imaging, and on and on.
Even with very distorted and poorly recorded stuff, do you want to add to the crap? Think about it. Pileing crap on top of more crap never brought me any bliss.
I run a Bryston B60 and Audio Physic monitors. Very neutral and honest sounding, among other things, for my budget