KoPilot has a good pedigree, I don't know any of his offspring though (but I did see an advert for one a while ago), KoPilot himself was up for sale quite a few years ago and I thought about going to look at him (being nosey/I love his sire) but I spoke to (well I can't say who I spoke to on open forum) but someone who would know about these things told me if I bought him they would never speak to me again (and not because they were jealous.....) so I never went.
My friend had one of his colts for his owner Liz for weaning, he was lovely they all seem to do well in the showring but not sure whether much has happened after.