I hear you about lousy peaches even our farmers market doesn't always have great peaches (and I live in So. Calif!)
So to compensate, I've been buying frozen peaches for ages. It isn't quite the same as biting into a fresh peach, but they are always full of flavor and great on cereal, in yogurt, or fruit salads. I don't know that I could even stand a lousy peach in a smoothy. I guess it would depend what else is in there.
2.5 years, 45 pounds later... 128ish pounds