It's one of those things that's a personal choice, and you really need to try them out for yourself.

I prefer three-way pan heads, because I like things to be square and straight and it's easier to do that when you can control the three rotation axes separately.

Ball heads, though, are more compact and quick to adjust, particularly for moving subjects. I have a small Linhof ballhead on my little travel tripod, which I use for my smaller rangefinder cameras or even my ultralight 4x5" Gowland.