I have used both, since I rent time on long arms, and hands down, the Gammill Statler. Having said that, I only use the computerized software for edge to edge quilting. I would like to learn how to FMQ, however. I am considering purchasing a long arm after the holidays, and most likely with get the Gammill.
The thing I didn't like about the Innova is how flimsy the frame is. You cannot, whatsoever, lean on it. I also did not care for the software program.
Good luck with your decision and let us know which one you decide on.