I know nothing about show quality, but....
I ordered 30 chicks from Ideal last year, and most of my others came from Mt. Healthy over the years via feed stores. I have a really nice flock of layers from those 2 sources. I think the Wyandottes (Buff and Columbian) that came from Ideal are a little small, but the Partridge Rocks, Speckled Sussex, EEs, Barnevelders, and Welsummers are very nice hens. Most everything I got from Mt. Healthy has been nice - Golden Laced Wyandottes, Buff Orpingtons, Barred Rocks, RIR, and Black Australorps. Only problem I had with them is the RIRs didn't seem to get along with the others as well as they might have. I got 4 SLWs from them, too - 2 of the supposed pullets were actually roosters; of the four I got one really nice rooster and one really pretty hen - by my standards, not show standards. The other 2 were so-so.
I have 10 3 week-old chicks from Mt. Healthy now - PRs, SS, and GLWs. There is a lot of variation in the size of the 5 PRs and the 2 GLWs. The 3 SS look big and strong. Time will tell on how they compare to the Ideal birds.