I just bought the Symphony on the recommendation of the store owners. They felt that I'd be happier with it over the Pfaff Ex 4.0. I'm having a hard time with the display screen changing when anything barely touches it. I've learned how to lock it and now I'm doing that, which helps but is kind of a pain when you are applique stitching. I had a needle bust this morning since it went from straight stitch to zigzag when I just passed some material through the throat area. Also, I'm having the same issue on the sewing speed. The slide keeps moving to a slow speed. It seems so odd that it moves that easy. Also, I had the sensor foot button set to on to piece my borders on my quilt top and I had a hard time keeping the top fabric where it should be. The sewing shop owner said to piece with it off and it should help. I thought the foot sensor was the great thing about it. I'm pretty frustrated and I'm hoping I didn't make a big mistake getting a Symphony. I've sewn for years on my old Bernina 930 and haven't had issues like this.