Sharon, I tried the fabric mover at the Houston show. I thought it worked very well on the small sample quilt they had for us to play on. It slid around very easily so if this is a problem someone has with regular quilting they might find they like the ease of the fabric mover. I was confused about how to move it once I had filled the area but it was easy once I was shown how. Different than just quilting wherever? Sure, but I don't think it's so complicated that it would take hours of practice. I had no problems getting nice even stitches. My friend had more trouble. We are all different after all. I did like that it used a regular freemotion quilting foot so visibility was great.
Some posts have said they like the Bernina foot better. Well, we tried that too. It's a whole different animal from the fabric mover. You are still moving your quilt around on your own. The foot hooks into the machine and is a large cone sort of shape. It is a stitch regulator (like the fabric mover) so you have beautiful even stitches. However, because of its large size you have to plan which direction you do your designs so you can see what you are doing. Some directions the foot really blocks visibility.
Everything has something to get used to :-)
Honestly, I wouldn't pay the money for either of them without spending some time test driving them myself first to be sure it really worked the way I work. The suggestion to bring a larger piece to test drive with is a good one as quilting always seems easy with something only 12 inches square.
marcella