We used Bursaw Oil because that's what the previous owner used, so we didn't think to change it. We were wrong. Bursaw had regular deliveries and provided great service, especially tromping through the snow to find the spigot, which is located on the far side of the house, way far from the driveway. However, their prices are high--higher than most in the area. Once we realized that we were paying too much, we switched vendors. Make sure to check your prices!