I have an Innova and learned on a Gammill with no stitch regulator. I prefer the lower maintenance (less oiling and drips) and lightness of the Innova. I do have an 26" with the Lightening stitch (stitch regulator), but no electronics.
It depends on what you what to do with the machine. Are you quilting for yourself or others? If you prefer to do free motion, I would suggest waiting on the Auto-Pilot (it can be added later).