Obviously, a professionally installed underground sprinkler system is the ticket but I just cannot afford one. So, with this being said, I am left to my own devices. Watering devices! I have both oscillating and impact [aka pulsating] type. Which one is better at putting down effectively the most amount of water in a given amount of time? I know the impact type you can set them for any size area...you can water areas that an oscillating one can't because it's too broad. Conversely, I think oscillating ones can water a large area in one go. I guess, what I'm wanting to learn is, which type is most effective for watering. Thanks in advance.