I have one and I use it frequently. It is a VERY NICE feature... I love it! I too learned on an old singer with the knee control and when I shooped for my new machine I almost bought the brother that had the knee control on it but it was pricy... I bought a brother embroidery machine and I love the button control feature... was a litle afraid at first of the button and I did forget to push it and was searching for the foot control instinctivly but no biggie I got use to it fast...