We have a big yard -- 1.1 acres, much of it grass. Our lawn looks awful with numerous bare patches. One of the problems is our outdated sprinkler system. It is has rotary sprayers that have been replaced over the years with many different kinds and brands of heads, and there are many places that no sprinkler heads can reach. I'd like to replace the whole thing with a new system, preferably with stationary heads. This is one project we won't try to do ourselves, but I'd like to be armed with the TOH staffers and readers' extensive knowledge before I contact a landscaping company for their recommendations. Since our original system with put in sometime in the 1980's, I'm sure there's something out there with better coverage and better electrical and water efficiency. We also plan on turning some of the grassy areas into something else (like expanding the driveway) so that we have less to water. We live in the Denver metro area. Thanks in advance!