Excerpt: Not perfect - would be nice if it had a QR option. But, it holds my Chamonix 8x10 camera very well and the adjustment controls are easy to reach and fluid - not awkward. I liked it so much I purchased a Gitzo GT3532S tripod for this head to rest on.
Excerpt: Very useful for large format (up to 8x10), long, heavy lenses and macro lenses in the field and studio. Works better on aluminum tripods. Too heavy for all but the largest basalt and carbon fiber tripods. Not easily adaptable to sports and quick action.
I have owned 2 of them.