Which heartnut varieties are best for a small backyard food forest?

Which heartnut varieties are best?

I’m thinking about adding a couple heartnut tree (Juglans ailantifolia var. cordiformis) to my backyard orchard/food forest. I’m seeing a few different varieties are out there, looking in particular at Grimo’s Nut Nursery. I live in Zone 8b in Oregon.

Does anyone have experience growing heartnuts? Anyone bought some from Grimo’s? Anything else I should consider before pulling the trigger?

Thanks!!