I've heard the Revel Studios with Bryston amps and Oracle front end gear at a dealer. I heard the Avalon Diamonds with Boulder gear at another dealer. The perfomrance that I heard from the diamonds was order-of-magnitude better than what I heard from the Revels - but the total cost of system was MUCH higher, in addition to being in a much better put together listening room, so take that for what it's worth. The soundstaging, dynamics, detail, resolution and richness of the Avalon/boulder system that I heard was SOTA, one of the best systems I've ever heard. I'm not sure what the spec is, but I definitely heard bass around the 30hz range, maybe lower. Very powerful and detailed and tuneful.
I have not heard the original Eidolon, however.
One other speaker that I've heard that I like a lot is the Wilson Sophia. Have you given it a try? Many of Wilson's previous speakers have been voiced pretty aggressively - very detailed, but in my opinion, too much so to be enjoyable in the long term. The Sophias are completely different - the detail and resolution is there, but they are voiced much more pleasing to the ear. They'll probably be my next speaker, unless I hear something very compelling in the meantime. Certainly not in-your-face. Your Lamm amps would be a match made in heaven with the Sophias.
I have not heard the original Eidolon, however.
One other speaker that I've heard that I like a lot is the Wilson Sophia. Have you given it a try? Many of Wilson's previous speakers have been voiced pretty aggressively - very detailed, but in my opinion, too much so to be enjoyable in the long term. The Sophias are completely different - the detail and resolution is there, but they are voiced much more pleasing to the ear. They'll probably be my next speaker, unless I hear something very compelling in the meantime. Certainly not in-your-face. Your Lamm amps would be a match made in heaven with the Sophias.