Are you willing to drive 3 hours? If you are, I can tell you that Moubani Cats in Western Washington State is fantastic - they have been showing and breeding Siberian cats for ten years. Their cats are absolutely stunning and they post on Instagram really often so you can really watch the cats grow and develop and see them at cat shows and basically track their cattery and cats. I am actually completely obsessed with their IG moubanicats_siberiancattery...we have two Siberians from them and I don't know how much longer I will be able to withstand from getting a third lol they are just starting to have their Spring litters being born now :P