Best rock/jazz speaker under $10k used


What speaker under $10k used can rock hard but also bring out the best in jazz voice? I love the sound of planars for voice, but I sometimes I really want to shake the walls and bring out the best in a power chord. Opinions?
gene_nj
Sophia 2 are pretty cheap used. They have good vocals and strong bass. The drivers lack ultimate integration and resolution. But at their current used prices they are a very good deal. The big dynamics will be good for rock music.
When I read the title, the first speaker that came to mind was the Prelude, even before opening the thread.
I would second the Prelude.
Thanks for all of your suggestions so far. I now know of speakers that I hadn't before. Keep them coming!