Chocolate Ball. And I forgot to answer you, I'm 6a. For sedums and semps, I stipulate 6a with clay, which does impact hardiness. I grow in pots, and work to improve the soil every year. I have beds edged with stones, and I amended the soil heavily around the stones so sedums and semps would grow well. Alplains also has some z5-6 cactus that I'd like to try when I feel like they have a good chance of actually surviving. They might still need to grow in containers to keep the dogs safe.
If my S. lineare reappears, I'll take cuttings, I have the variegated version. This was a super cold winter, it'll be a test for sure.