The Manfrotto 303 SPH is an extremely stable Panorama head with all kinds can be made of panorama shots. It is much more difficult than my NodalNinja 3, but with heavy cameras and lenses my first choice. If it does not depend on the weight, I pull the head from when shooting with the 5D and 7D. In addition, head of solid quality. Since I do not worry that something might be defective. The settings for the nodal point are based on the track of good marks on the plates for different camera and lens combinations.
The plates can also be mounted differently and alternative use as a cross slide for macro shots.
The pan head will cost good money. The real alternatives from Novoflex, RRS etc. that can deal with large souverrän weights, but are even higher.