I'm in the final stages of designing my sprinkler system and was getting ready to place an order on your web site, but was having a tough time selecting the Rotor sprinkler heads. I have been looking at the Rain Bird 5000 Plus and the Hunter I-20's. My following concerns are low pressure, prone to windy conditions and coverage. Price is not a concern because I would rather spend more for reliability. I have read that the Rain Bird 5000 Plus has good coverage and that the Hunter I-20's work well ...