Pan head, I can't imagine using a ball head to grid a hillside
I prefer a pan head for everything, just never liked the ball heads.
I haven't found a pan head that I like yet. None of the ones I've tried ever stay where I put them. I tighten it down and it's all moved. Hate that. If the ball head didn't work out I was going to try the Outdoorsman's, but so far so good with the ball head.
I prefer ball heads because it's lighter than pan heads.
I prefer the panhead. I tried to make the Sirui ball head compete with the Outdoorsman's, but there's no comparison between the two when I put them head to head.
For binoculars, which I take to mean gridding, pan head for sure. There's not even a debate to be had. A ball head is lighter and I can see using one on a sheep hunt for a spotter, but not for glassing with binoculars where small, smooth, repeatable adjustments are required.