All of the donut peaches are prone to rot. Saturn in particular is highly prone. So unless you are doing cover sprays all summer long I would skip that one. TangOs is tolerable for rot. Galaxy is between those two but it is too rubbery.
I don’t think you need to worry about cold hardiness in zone 6, its zone 5 that is borderline.
My report I would not really call a guide, it only covers the peaches I have grown which are not the most common ones. I think they are a notch better than the standards for flavor, but almost any perfectly tree-ripened peach is excellent when you are biting in to it. That said, if you can find some of the peaches on that list they should be good ones. Raintree is selling Kit Donnell I noticed. In most years you can find Winblo, but probably not this year due to crop losses. Note that if you have not yet grafted any peaches they are much harder. Many (most?) people get all failures the first time they try.