I have an 03 TCR Composite. If I were buying today I would look seriously at the OCR Composite. I would have no interest in the alu version. The OCR has a more relaxed geometry. That means the handlebars will be higher in realtion to the seat than the TCR, it has a larger wheel base, comes in a triple which the TCR does not. It also comes with 700/25 tires which are more comfort oriented. I would probably put on 23's when they wore out unless you like a cushy ride with less performance.

The OCR Composite is a bit ugly, but I bet it rides sweet and is a great bang for the bling.

On the other hand if you are young and in shape and like to go pedal to the metal then look at the TCR.