I just love Ashmead’s Kernal. I did an apple tasting at Scott Farm Orchard in Vermont, which has over 100 heirloom varieties. It’s such an investment to plant a tree and wait to taste the fruit, so I wanted to try the broadest selection I could before picking. You can read my tasting notes here if you’re interested:
https://thisinspired.life/best-heirloom-apples-small-home-orchard/
Btw, there are so many options for cooler zones (I'm zone 4) and St. Lawrence Nursery near Canada has a lot of great options for cooler climates.
I have an order in this spring for an Ashmead’s Kernal, Reine des Reinettes, Bramley’s Seedling, Northern Spy, Chestnut Crab, and Liberty (my safety net

I’m super excited to start my heirloom orchard!