Sorry perhaps I should have been clearer in the original post, I was looking to compare an 'old' alloy (pre 2005) P3 with the latest P3C. I know that it is unlikely that there will be any new ones for sale (although one of my LBSs sometimes 'dig' out of their stock rooms frames of the pre 2005 range, not just Cervelo's but other makes too, not sure why they are still there) but was contemplating getting a secondhand one.