Just passing on what the guy said thats all, so thought it might make useful discussion on here!
Some interesting replies, but as i'm well over 65kg think I might go for something thats not going to break! I for one wouldnt be very happy if I spent several thousands of pounds on a nice looking carbon frame only for it to fall apart on hitting a pot-hole.
Although Chris Froome weighs in at 67kg, he doesnt have to pay for his equipment.
I've ridden:
Strathpuffer 3 times, 10 Under the Ben 3 times, various other MTB routes and adventure Cross
On one carbon MTB frame; 6000km logged on Strava, still going
11000 Km of road riding on a carbon Synapse, still going
and just passed the 1000km mark on my latest aquisition also carbon fibre.
And have been over 70Kg for all that time, seems I should have died a horrible death by failed carbon fibre by now.
One of the best bits of Carbon Fibre frames is arguably their repairability;
If you cut a fibre or snap a tube they can often be put back together (some repairers believe their repairs are stronger than the original) and you wouldn't know, put a gouge in the surface epoxy resin layer (which is surprisingly deep) and it just needs some clear nail varnish to replace it.