Not got one but do plan on getting one - an Ultimate CF 9.0 hopefully - many good reviews, fast, light, stiff and comfortable. When looking at the frame size don't worry about the seat tube go more on the top tube and it's also worth noting the seat tube angle is a bit steeper than many frames so the top tube length need not be as long (saddle will need to be set back so effectively adds length to the TT measurment) and if between sizes go smaller - even though their online sizer is mainly inseem based.
Main issue I'm aware of is that if you need to change the size of something such as a stem then you need to take delivery of the bike then organise the swap. They do have a uk service centre on 0208 5012582 too. I say the stem as the fork steerer is 1 1/4" in diameter whereas most are 1 1/8" so it is difficult to get a different stem from anyone other than Canyon (can get a Syntace F119 or the supplied Ritchey WCS)
For me this is a small issue and I have worked out what frame and stem I would need. You have to work this out for any new bike to make sure the frame size and geometry suit you anyway.
Good luck and if you want to consider alternatives I suggest Cube, or Rose (Red Bull Bikes in Germany also very good value and spec but less info available on them)
HTH
