I'm now a fan of the Katie Jig from Sommerfeld, which is about the same as the Leigh. I've found this easier to use than the Porter Cable type, and the Katie has the ability to create your own spacing with extra forks you set manually. The new version has a new name, but interchangeable parts and accessories.
I would like to sell my Rockler version of the Porter Cable jig since I just don't use it. All repacked neatly into its shipping carton, along with a dust collection attachment and instruction book.
PM me if interested.
The more I do, the less I accomplish.