Ran across these a a new customer today. Must be at least 6 or 8 years old. The Voyager II looks like a clone of an older PGP except for the nozzle colors (green instead of red.) Went to the website to compare nozzles with Hunter's and found something weird. http://www.orbitonline.com/lib/media/55461-24 rC(5)1.pdf Check this out and look at the precip rates. Nozzle tree apparently came with only eight choices instead of 12. (1,2,4,7,8) Their standard pre-installed nozzle is called a "7", but the flow rate is less than their "4".... WTH? Nobody bothered to change any. Quarters, thirds, halves, fulls... sun or shade, same nozzle. Hoping to save the client some money by just changing out nozzles but now I have to find the appropriate replacements from the Hunter line. In any case will be a band-aid approach, but hopefully more uniform than before I got there. Looks like the PGP "10" should double the flow of the Voyager "7" so be right for the full heads, as a start. And I do believe we have the pressure and flow to handle the change.