Which bike should I buy?

I’m about to buy me a new bike.
I have found two interesting bikes: Trek 5500 (2004 with Ksyrium SL) and Kuota Kharma + Ksyrium SL + DuraAce 10 speed.

Perhaps you have some tips on other bikes or experience with the bikes above?

/Lars

KUOTA KHARMA: Is 100% carbon (Lugs & Tube), Type of carbon used is : Carbon HM, + they give you a monocoque fork (KUOTA Win fork) even the steer is carbon…the bike received the best score see the link for more information. + they used the sime carbon to built the Kharma as the KHAN, KREDO, KALIBUR & Ksano…voted in europe the best price/quality ratio in is category. Please have a look at www.efbe.de/defbefrm.htm Clic the English version. Clic racing frames. In this page You can find and compare the Official Test results on Kuota Kredo and Kharma. Frames were tested and certified at the EFBE. EFBE is an independent Istitute in Germany able to test bicycles and frames according to the most severe world standards. Kredo & Kharma succesfully passed all tests and has been classified “TOP PERFORMANCE” racing frame.

The Trek 5500 is the same frame that 5200 only they used the DURA ACE.