If your asking what's on the market new that's a comparable replacement, I'd argue something along the lines of a Trek 4.7 at $3149.
Mid level CF frame, and Ultegra components, same level as your bike..
The counter would be that everytihng has gottent better and a current 105/Tiagra level bike is arguably better than a 2002 Ultegra spec'd bike.
But I'd try to get my LBS to say the Trek 4.7,or similar, equipped with the same Ultegra level components is the appropiate comp.
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