You really have to test drive any DSM just like you would when buying a new or used car. I have a Bernina 1530 which was a model produced before stitch regulators. Achieving FMQ takes a lot of practice. I learned from the best at the time I was professional quilting for others. I took a class from Harriet Hargrave and it was the turning point in my quilting. You need to be able to duplicate the movement that the your sewing machine moves the fabric at a certain speed. Secondly, you need to learn to be looking to where you want to go, not where you are at currently. Hope this helps. Make some charity quilts or dog beds to hone your FMQ skills.