I think the general consensus is that PK is better for park/freestyle and Holly has longer runs.
The one time I was at PK this season, it was like a junior high school. Loud, obnoxious kids all over the place. Maybe that's your thing though.
Im just trying out all the short local hills and these two are next. Guess ill hit Holly next then. Thanx Sabatoa. (Little snow coming tomorrow. Not enough to make much different though)