The Ascend Acoustics Sierra Tower may be worth exploring further. Sounds like it might work with your amp, and it seems equally at home with both rock and classical music. One of the main reasons I'm mentioning it is that it's available with a Raal ribbon tweeter that I think your ears will really like (completely different design than what Dali uses). I heard it during an extended audition of a Selah speaker, and it is very sweet and detailed but never even approaching harsh in any way -- buttery smooth is the way I'd describe it. The stock silk dome tweeter seems pretty refined as well, but if I'm you I go with the ribbon hands down. Seems like this speaker may push all your buttons. Here's a review just FYI...
http://www.enjoythemusic.com/magazine/equipment/0312/sierra_tower_speaker.htm
Best of luck in your search.
http://www.enjoythemusic.com/magazine/equipment/0312/sierra_tower_speaker.htm
Best of luck in your search.