Hi,
While I lived up north, I grew just about all the sand cherries commonly available. They are easy to grow, thrive on neglect and are pest free. I lived in zone 5 and they wintered over with no protection and no winter damage even the winter when we hit -30 for a couple of days. They make great jams and jellies but are a bit tart for out of hand eating. You can use them much like currents and they make a nice sauce to accompany a venison roast. Fruits were small but mine were grown in a bare dry windswept area and probably did not reach the size they might have in a more hospitable area. If you are going to grow sand cherries, consider some of the black too. Plants are not quite as pretty as the Nanking but the fruit is a bit sweeter. They are not huge plants and squeeze into a landscape quite well providing color in both spring and fall as well as fruit.