I do not have a brand name for you, but I would suggest one that puts out large droplets of water. A fine mist is a waste as it evaporates easily.
Is your landscape the way you want it? Do you need a big turfgrass area? Or is this for gardens?
Along with being organic, www.txsmartscape.com
can save you $$ in many ways. I just learned that cottontail rabbits do not eat native plants so much. They love to eat pansies, petunias, etc. This will save you from replacing eaten plants! Native plants will save you on watering needs, fertilizing needs and money involved with replacing plants that are sick or die because they are not native or adapted.