I had a Frost peach for several years, until it succumbed to some sort of leaf curl. We got good fruit from it, although you had to watch for earwigs. One time I (fortunately) sliced one in half to eat and it was absolutely filled with bugs. So glad I didn't just chomp into it. Shudder. So, Contender and some sort of Donut peach are doing well in colder zones. How long is your growing season? I'm in a temperate zone but often have less/weaker sunshine than others, which can make a huge difference.
