Window Mount for dSLR

My window mount has disappeared. Now, I need a new one.

The lost one consisted of a small ball mount on a separate base that attached to the window. It held my dSLR quite well, and the adjustment range was adequate. Seems that both may have been made by Monfrotto. But, maybe there is a better setup that someone else has found.

What's the best solution?
I also have the Bushnell one and like it. Very sturdy metal construction.