I Nelson RainTrain Traveling Sprinkler: This model is excellent for large, open areas (up to 13,500 sq. ft.) because it moves along a pre-set hose path and shuts off automatically at the end of its run. It has a durable, cast-iron body.Melnor XT Metal Turbo Oscillating Sprinkler with Flow Control: Ideal for small to medium rectangular yards, it offers adjustable controls for width, range, and flow, covering up to 4,500 sq. ft... Reviewers praise its durability and precision.