If I can chip in a little bit, Neil...
I know I only own the 'little' Epiphony speakers, but the quality of the brand holds true.
I heard both the Lorellei, Epiphony, and Nightingale (very briefly, that) at the RMAF.
From what I heard, they all share a common trait, and that seems to be one of organic musicality.
There is 'something' there. Any of those speakers passed my first test of listening: 'Does it make me tap my toe?'
I know it sounds kind of primitive and naieve (sp), but it is a technique that gets my conscious mind out of the way, whereby my 'soul' makes a judgement call.
I listened intently to the Odyssey gear out there, and passed up the opportunity to bring the show Lorellei speakers home, primarilly because of transportation issues and not wanting to make that big of a decision without my wife's input. I did however, bring home the Epiphony speakers though. Once hooked up, wife absolutely loved the 'musicality' aspect right off the top and within a day asked me why I didn't bring the bigger (lorellei) speakers home.
Aw, they wouldn't fit the smallish room I currently use, but they would have been great fun trying to live with.
My listening room is the 1st of 3 interconnected rooms, and quite often, we listen from other rooms. Happilly now. No issue with 'off axis' for us here.
Although undoubtedly, the Epiphony, due to its size is going to have some issue with the extremes of what they can reproduce. I can easilly show this by unplugging them and reinserting my Altec 19s that sit right behind them, in.
But we keep listening mostly to the Epiphony's. The sense of musicality is what I blame for most of it. We just like 'em! I can swap back and forth between my Bryston amp or my el84 tubed amp, and enjoy them both equally. In fact, on the el84 amp was when I first heard the Epiphony's plain-ass disappear. Quite satisfying!
I was talking with Vasu the other nite at a GAS gathering, and I think that he and I are on the same page on that musicality issue.
There really IS something there, even if you cannot put your finger on it.
I like to think that maybe it is like the sugar they put in McDonalds french fries..Makes you come back for more, and you don't know why.
Chime in here if you have a different opinion, Avalon. I really thought I might be able to live with the Nightingale, but didn't spend enough time with them to judge. I would be more likely to take a 'shot in the dark' at them than any other speaker brand I currently know.
To me, that is a complement to what Odyssey tries to bring to the party.
Although I was saving this for a brief review of the Ephiphony in the GAS circle, my final, definitive complement for the Odyssey speakers is that I consider myself a 'bottom-feeder' a lot in this hobby. If I can find 'used' to suit my needs and keep it affordable, I do.
The Odyssey Epiphony speakers are the first ones I ever bought new.
But don't let this influence you...

hehehe
Great luck to you and your decision!
Best Regards,
DeadFish