Just as a point of reference, if you decide you like the Jamis Aurora -- I just picked one up (new 2009) from this shop out west for $650 (took some wrangling to get down to that price -- they are listed on the site at $699 -- still a great price). Should have the bike on Monday. They have them in 55, 57 and 59cm.
http://www.bicyclebananasstore.com/2...a09_aurora.htm