I used the Sahara zip off pants from the border to Big Bear. They were very nice, although the zipper area took a long time to dry. If I got new Sahara zip off pants, I'd get the kind that can be removed without taking off your shoes.
I used RR Winter Adventure pants from Fobes Saddle to Snow Creek. I thought that with all the snow, glissading, self arresting and wearing crampons that they'd be perfect. I found that they were way too hot, restricting my stride, and didn't hold up against an errant crampon. At least they were great for glissades and seemed really good at resisting moisture. Still, I won't consider wearing them again unless the temps are in the low teens.
My next pair of long hike pants will be Ecomesh. I like the protection of long pants, but I don't think it's possible for me to wear long pants that breath too well for a PCT thru hike.
Oh, and I think the Adventure pants will be way too warm.