jdangelo,
I dont think you can go wrong with either the Hunter PGP or the Rainbird 5004 rotors... I dont have much experience with valves but have used the Orbit (from homedepot valves) and the RainBird Valves... The orbits are trash and start getting stuck open after a year of being installed. The Rainbird hasn't let me down yet.
If you are doing the system your self I would recommend a manual shutoff before the valve to make swapping out a valve for that paticular zone easier without having to shutdown your whole system. I didn't do this on mine and am now having to do it and its much more difficult.
Just my two cents.
Thanks
-John