My concern with this particular bull is that I am sitting here looking at the Bennett spring bull sale catalog and I see exactly one son of his in the catalog. They own the bull and do not appear to be using him much. They have registered only 63 or so calves out of him and he is a 5 year old and they only registered three calves last year out of him. Kingpin was a great bull and Kingpin sons like Trendsetter and the other sons that seem to be emerge will be in demand now that the Kingpin semen is gone. This bull may end up being a good one, but I would feel better about using him if Knoll Crest was using him themselves.
The thing about Bennett's is everything that come from there has great EPDs. Some of them keep those EPDs like G196, Kingpin, Landmark, etc when they leave and some do not. S30 has not sired any calves anywhere except Knoll Crest. He may keep his great numbers or he may crash, time will tell.