road bike for price range of $500-$600

[Starfish]

I had a heck of a time finding specs online, but here's a 2003 spec on epinions.com... I am not sure how different the 2005 is... it is an aluminum frame and has all that shimano stuff on it, from what I recall. The frame is small but seemed to fit right, although DH says I will be surprised when I try more bikes today.

http://www.epinions.com/bicycles_2003_Fuji_Newest

Sorry, I can't offer any opinions on the Tiagra group. My bike has 105.