I planted Fry Seedless, Lane, Hall, Ison, and Darlene in fall of 2015. All were 2-year bare roots from Ison’s Nursery. Our winter low that year was -12. Lane survived with no winter die back, Darlene died to the soil line, the other three didn’t make it. It’s just one year’s experience, but Lane looks promising for colder climates. I added a Nesbitt and a Triumph last spring and should have a better report in a few months.