I have only used the Hunter I-20's a few applications, but other than that, I have used mainly Rainbird. Although I don't know your application, I have written a review on the Rainbird 5000 Plus. Either rotor is good with all of what you asked for. The review should help you decide.
http://www.sprinklerwarehouse.com/Forum/topic.asp?TOPIC_ID=222
Thanks!