I agree with Otis. I like the groovy boards. They are expensive, but I find them a whole lot easier to use. I have 3boards of each pattern. Well, not every pattern, but quite a few. If the quilt is larger than that, I "leap frog" the front board to the back. My machine has an 18" throat, so those are the ones that I have.
I saw them for the first time at the Houston Quilt Show and instantly saw the solution to my longarm frustration. I struggled with the pantographs, watching the pattern and the quilt at the same time. I never got the hang of it. I got my groovy boards from QuiltEZ. I'm thinking they are available elsewhere, but they are the only one I know.