I have the Flynn frame. I had a hard time with it. You need the right size pvc pipe to roll it around on. Its kinda hard to set up. your machine has to be set up with the end of the arm facing you so changing the bobbin is a real hassle. Plus you have to have a long table for the pvc pipe to roll on. It is more trouble than it is worth.
I bought a new sewing machine with a 10 ince arm and that has helped alot with moving my quilt around. Those few inchs do make a difference.