I almost bought a Danone mare (and honestly, still kick myself that I didn’t). Prior to purchase I did a fair bit of research about his offspring. Some things to note: they have a tendency to be taller rather than not, and he typically didn’t seem to be particularly modern. Some could even seem somewhat on the shorter legged side compared to their body, but still fairly (to really) substantial horses (both in bone and build - not super refined/narrow). The one I almost bought (and the ones that I had researched) all had great character - very ridable, good temperament, not necessarily dead headed but very reasonable. I quite like him and am holding onto him as a consideration to breed to in the future for my own mare, based on my experiences with them and what I have been able to learn from others who also have horses by Danone.
Hope this helps!