I have a Damo and a Noah, my wife has an Excal. The Ridleys run larger for their designated sizes..I ride a Medium Ridley. Being 6', I am right at the top of the medium size with the 56.5tt..I like a 57-57.5, but their size Large has a 58, I think I recall..So I went Medium.
I am real happy with both the Noah and the Damo. The Noah is very good in sprints..Outstanding, in fact. One feature I had my doubts about was the ISP..but I like it fine. Interesting is that the seat mast is triangular (and symetrical) in shape and you can reverse the seat head, thereby moving your saddle into a TT position, quite far forward..I've done a TT with my Noah's seat head reversed like that and with some real TT bars. It is almost as good as a dedicated TT frame.. The headtube is a little too tall to be a real TT frame, but if you only want one frame and yet you may do an occaisional TT or triathlon, that is a convenient and workable alternative..
The Damocles is a little more comfortable and easier on your butt on long long rides or on bumpy roads, but it still is quite stiff.
I had a Scott CR1..which rode a lot like the Excaliber my S.O. rides, but not nearly so smooth. Scott, BMC, etc.,the big tube frames all sound hollow and ride a bit rattley. The Excalliber has a hint of that feeling but just a hint..
The Damo feels more like my old Time VXR or a stiffer 585 Look..I ride the Damo (less expensive) for crits and the Noah in RRs, especially ones with sprint finishes expected If I again try the Everest Challenge, it will be the Damocles (for two days climbing all day ).....If I am going on a shorter mountain hammer fest...either one is good..I bet the Excaliber might climb a little better than either of it's more expensive brothers, but I can't get it away from my S.O. to try it..
All three are very good descenders, though the seatmast of the Noah can really give you a big hit at ~50mph with an unexpected bump, where the Damocles (I use a Ritchey WCS set-back carbon post) soaks up the rough stuff without any drama. Hands-off the bars at 45+mph happens with no hint of headshake...
Excellent bikes, the Ridleys. That CC deal is very good..
Don Hanson