My wife and I put in our pool when our kids were young, but now our older pool needs re-surfacing. We our looking for the best, cost-efficient, low maintenance coating. We have looked at Marquis, Pebble-Tec and Diamond Brite. We are leaning toward Marquis as it is less expensive. As retirees on fixed incomes, we don't want to pay too much, but don't want a finish that will wear out quickly.