Just to put in my two cents...
When we lived in Missouri, we ordered hundreds, maybe thousands of chicks over the years from Murray McMurray and always had good service. We usually ordered 100 chicks per order to save on small order charges and to give us a fair number of birds from which to pick our breeder birds from. We raised and sold chicks & started birds from the farm and also sold at animal auctions, flea markets & poultry swaps. They had good customer service, were one of the closest to our farm and had a good selection of rare breeds. They seldom had to change the order date and we always got the breeds/varieties we ordered and a few (Usually 4) free chicks per order (Always roosters). Most of the stock we got were of course pet to average breeder quality, but we did get some very nice birds of some of the breeds. I suppose like any hatchery it depends on the breeders that are supplying the eggs. Overall I think they are a very good hatchery, just remember that they are a hatchery, so don't expect show quality.
I have also ordered from several other hatcheries and they are all ok in my opinion, but the bigger hatcheries usually have better customer service and fewer problems.
Sorry for the spelling, my spell-check just went to bed.
Terry