This seems like a very basic question, and I can't find a decent answer.

What would be my design considerations when choosing a;
"Moving table" over a "moving bridge" or vice versa?

Please correct me if I'm wrong, but I think I have found examples of each;

Bob Campbell "moving table" : http://www.campbelldesigns.com/

Data-cut "moving bridge" : http://www.data-cut.com/Page2.html

Thanks!

Michael