I have 7 or 8 Dark Cornish hens, all from McMurray. They are on the smaller side (as are most of the hens I've received from McMurray, except the Partridge Rocks which are huge!) but they have a very nice temperament and are very docile and are all shaped nicely. I have found some other hatcheries I like (Estes; Hoover's) but they don't have Dark Cornish, and I probably won't buy from McMurray again. Would like to find a nice Dark Cornish rooster.
(As a sidebar, in the mix I purchased from McMurray last year I got a bunch of various Leghorns. Tiny tiny birds, tiny eggs, poor layers, flighty. Never again!)