Choosing the right irrigation system will depend on a several factors such as cost, efficiency, water conservation, the size of your lawn, which types of grass you have, etc.
Having an irrigation system will improve the overall health of your lawn by building its resistance to fungi, diseases and weeds. Which type of irrigation you choose, however, will have to depend on what's best for both you as a homeowner, and your lawn.
Below we'll go over both the pros and cons of above ground and under ground sprinkler systems: