Thanks for all the comments
Soliloquy and Vandersteen are already on my list. I'm surprised at the mention of Sonus Faber and Vienna Acoustics. From what I understand these are pretty "warm" speakers (some would say staid) that excel at, say, classical music and vocals, but aren't the best choice for rock music (stuff like Radiohead, Wilco, Flaming Lips, etc). The Kefs, while on the warm side of neutral, are to my ears hardly warm and romantic sounding.
Panny, by "Metal Driver Technology" I assume you mean aluminum dome tweeters? If so, I already have a HT consisting of Paradigm Reference Studio speakers. They are fine for watching DVDs but aren't to my liking on 2-channel music.