In reply to Enty: I've been considering a titanium frame for Audaxing recently and had considered the Dolan. However, after looking at the geometry I was really put off; the combination of a very tall head tube and short top tube means you'd have a very upright riding position (especially valid for the OP if it's to be used in triathlons). I'm saying this without having sat on one though so maybe the numbers don't tell the full story. It's not particularly light for a titanium frame at 1.6kg either. It is definitely good value though!
Now I'm thinking about the Van Nicholas. More money but everyone raves about them.