WTNUT - I just returned from hunting camp ...... catching up with e-mails & forum. I'll answer your question from your earlier post #8 below.
My experience with SLN has been great. I haven't lost a tree that I got from them. The Antonovka rootstocks they graft to look like a carrot - not all hairy-looking fine roots like other rootstocks. Don't let that scare you. Antonovka roots take about 2 to 3 years to kick in for big-time growth, but when they do kick in - they take off. I planted my trees so the graft union was about 1 1/2" above finished grade, and they've all grown well for me. I've gotten crabs and regular apples from SLN and they have all developed into really nice trees. I have NO complaints with SLN. I have put together a new order for spring 2018 already from SLN !!!
I've always been drawn to the assortment of crabs SLN usually carries. My favorites are their All-Winter-Hangover crab and the Winter Wildlife crab. Both are doing extremely well for my camp property. We also have Chestnut, Violi's, Centennial, Dolgo, and Centurion crabs from SLN. All are growing very well for us.
I also got regular apples from SLN. Sherry, Prairie Spy, Bonkers, Rhuby, Minnesota 1734, Wolf River, Priscilla, Liberty and Kerr ( apple/crab cross ) are the regular apples I've planted from them. I've been well pleased with SLN's stock. Hope that helps in some way.