That all depends on where all of the zones are in relation to main line. I hate to see bunches of the rounds all over the place, looks dumb to me, and they only fit one valve each. I would opt for standard boxes with two or three valves in each with up to four. They sell six valve manifolds, but require a jumbo box. They are JUMBO though, and would have to be in a place no too easily seen. I have found that drip zones with filters require a little more creativity sometimes since the filter takes...
Try the RB 3500 rotors for this situation. The toros are really cool to see spray but pretty pricey if I recall. You could check out the new MP Rotator units also. Can't find my info on them right now try searching the web.
I'm going to put a plug in for the Rainbird 5000 rotors. I love them thats my first choice when installing a system. The I-20 are a good product and havn't had seen too may problems with them. But the rain curtain spray pattern on the 5000s is a work of art to me.
