I did a couple white grape-peach wines and discovered that the peach really adds a ton of body to the wine, even after complete fermentation (I used the concentrate). I aged one for a few months to see how it would mature, but it didn't change much at all. From my notes:
4 months in bottle: The flavor was much like it was when it was first made, the alcohol is a little smoother though. This might benefit from carbing and serving within a month or two.
OG was 1.06, FG was .999, approx ABV 8%.
This is a quick swmbo pleaser