As I like to have straight lines in my pictures ( I'm German) I really like individual controls for every direction. I use a Feisol 3301 for some years now and a Manfrotto 410 head with a Linhof Technika 4x5.
But usually I don't need all the controls at hand for large format. So this get's me thinking, do I need a head at all? Is anybody of you using his large format camera without a head on the tripod, just a leveling device and that's it?