Evergreen sprinklers installed a large 30 zone system at my country home. They have the expertise, man power and equipment to get it done. The owners of the company work right along side there guys. There were a few leaks when they started up the system. They were back next day to look after them. You may save a few dollars going with a light weight company, but my experience tells me to go with the best the first time. Ask for Dino or Vic.