I have a 15" Bailey with stitch regulator. It glides easily on the rails of the Little Gracie II frame. Because of my fibromyalgia, I often sit to quilt, although I am thinking I want to modify the handles to make it easier. I would love a computer guided system, if I could afford it. Right now, it isn't in the budget.
If your budget allows, go for it, but make sure you have plenty of dealer support.