My two cents - I have had two Baileys, the 13" and the 15" and the difference between them and the Innova is gigantic! My Baileys were on a Little Gracie II frame, the frame was fine.
I was always quilting, so had much experience with the problems of the stitching, tension, and etc. The 15" had the stitch regulator, and I never found it was any great advantage. I used these machines for about 3 years. Am so glad I have the Innova and if I had to go back to Bailey, after my experiences, I would no longer quilt...
Phyllis