I love my Pfaff machines. I have an older 7550 model and a 2144. Both have built in duel feed and that is a wonderful feature. I have only done regular maintainence on each machine and had no problems with either one. I am very happy with them. Each has lots of embroidery stitches on them. I didn't have very many stitches on my Kenmore so when I got the 7550 I embroideried everything I made. If you make a list of what you want on a machine, it will help you to decided which is the best machine for you.