I'm not a golfer myself, but have family in Truckee. Have never heard anyone say anything negative about Coyote Moon or Old Greenwood. I haven't played either course, though.
I have played Gray's Crossing, which IMHO was a pretty nice course. Not sure if this is true, but have heard Old Greenwood and Gray's Crossing are owned by the same company, so you get a discounted rate if you play both courses in one day. Coyote Moon is supposed to be the prettiest of the 3 because you are secluded in an area with no houses or roads. Old Greenwood and Gray's Crossing are right across the freeway, so travel time would be minimal.