Sydney Acres
Songster
The hatchery silver greys that I've seen recommended are from McMurray. I have not seen anyone review the ones from Meyer. You might also contact Duane Urch at Turnland Poultry. He used to list SGs, and most of his birds are nice. I don't know if he still has them. For breeders, try Mary Wetterstroem at https://www.facebook.com/Roseland-Haven-Farm-170211816402340/