I think Don Frederic is a bit of a freak of nature. Not that you wouldn’t be thrilled to get one like that, but not to be expected! Like Florencio and Quaterback, although they are great sires, I doubt they will reproduce their movement in that extreme. The hard part is figuring out the nick that gets those qualities even if the mare and sire may be somewhat lacking as far as being extreme, yet put together they pass it on. Also, most of those super buoyant guys are hard to keep the regularity in their gaits - kind of like having to stand in a row boat versus sit in one. Especiallly in movements such as the half passes, it seems easy to disrupt the swing so the horse ends up looking uneven - even with the most pro of riders, but in all they do tend to score super high… Overall, I think they are harder to keep sound, as you notice more of the top FEI horses are not those who won the Bundeschampionate.
Here in NA, I would say Freestyle, but like him to a more modern mare with a quicker and more powerful hind end and although many of the "F"s can look lithe and modern as youngsters, they do tend to get heavier as they age. I love Negro, but can see how one might not appreciate him if you are looking for a Don Frederic. He is more of a Grand Prix destined producer, then a head turner for the basic trot especially. He seems to stamp a canter that will easily find all the Grand Prix movements at an early age, plus piaffe and passage that are head turners. The "W"s do generally have an uncanny ability to swing their butts and like Florestan, it seems to be that the line has a stamp that is easy to recognize, you just have to decide whether you like that stamp!
Not that familiar with the "Don"s, but I do really like the video of David Blake on Don Gregory. Some Don Schufro’s have incredible movement, but others I have seen, duds. So the nick must be important there.
Not to hijack the thread, but speaking of Quaterback, does anyone have any thoughts on Quatenkoenig? Not sure if he is available yet, as he is very young, but the combination of the bloodlines looks interesting…