The Fanotec Nodal Ninja M2 Series is arguably the best, panoramic tripod head you can buy.

This is what Fanotec say about it:

Strongest, "Repeatable Results", Arca Style Modular Design, Upper Rotator Lock Stops.

Popular Uses: Landscape, Super High Resolution, Gigapixels, Commercial, HDR, Semi Pro - Pro.

Cameras: DSLR's, Medium Format, some Large Format.

Lenses: Portait mode up to 400mm - Landscape mode up to 750mm.

This has been taken out of the original box but has never been used.