Thanks for your suggestions, Seditious3, Gotog, Rodge827, and Magfan. I'm actually trying to avoid ported speakers (though I very much liked reading about the Lenehans and its back-to-fundamentals approach to speaker design) and sub-woofers. I have a demo pair of ATC SCM-19's reserved for the weekend. These aren't 3-ways, but last night I absolutely loved their sound (un-sound?) and speed when mated with my system. They appear to have the little extra reach I was looking for in the lower register, that their little brothers, the SCM-11's, were missing. I'll be spending a lot of quality time with them these next two days!