I like my start/stop button for certain projects, such as a jelly roll race type of quilt when you are doing a lot of straight long stiches, or another example is when making a jelly roll rug and your sewing your fabric and batting after you've folded them. I do find I do have to slow my speed though when using it and for me there is a learning curve to it, my brain can't seem to remember to push the stop button instead of lifting my foot to stop sewing.
