I think everyone on this site has a preferred sprinkler brand based on personal experience. I would like to perform true statistical testing on some of the medium/large radius designs of single stream, multi stream and impact sprinklers with various nozzles. The testing would help determine accuracy, consistency, and overall quality of the sprinkler with each nozzle available...(ex. Rainbird R-50/R-50-SAM with both the Rain Curtain and Radius+ Nozzles). I will test each sprinkler at the factory recommended overlaps, flow and pressure settings. I will place catch cans the full length of the radius. I will use computer modeling to calculate the coverage that would be expected in both box and triangular installs. The ratings would be generated based on test results only. I know that it will be impossible to test all the sprinklers on the market with all the various nozzles...but what I want to test are the models that are most popular with Lawnsite members. I will also be interested in testing any other sprinkler/nozzles that the manufacturers are willing to submit. Here are some questions to help start this database: What sprinkler do you prefer in the 30-40 foot range? Corner? Side? 360? Which nozzle? I also would like to ask the help of any manufacturers/distributors on this site who would be willing to send test samples to be used for evaluation and then returned after testing. I will post my results on the web and then will continue to test different models/types/ranges of sprinklers. My goal is to provide just the facts...so people can make decisions based on there own needs. Thanks in advance everyone.