Linda: I am in Zone 4b, and have had 'Change Dynasty' growing in my garden for many years. It's a superb plant and does very well here with all the snow and bitter cold temps. Bloomed its heart out this past summer, and never looked better.
I agree with the member that mentioned your evergreens. I have 'Blonde's Beach' as well. It bloomed well the first summer it was here, but did not bloom last summer, after one of the coldest Winter's ever in Vermont. However, it did add several extra fans. I have covered it this Fall with leaf foliage and pine boughs for the coming Winter. The good news is that my garden is 100% dormant now. I did not add any new plants this past summer. It's the evergreen plants in our colder zone that you have to be careful with.
Good luck with all those lovely daylilies.