I've used some for about 6 months - very nice and stiff - seem to be tough, although a little heavy - but that's what I wanted...
Just put these onto my training bike as my old Open 4 CD's are making very strange noises from the rim/spokes - about 15 years old....
Just purchased the Ksyrium Equipes for the best bike - bottom of the Ksyrium range, very similar to the Aksiums, but a little lighter, and look bullet proof.