I have the Serenade's cousin, Pfaff Smarter C1100, for about a month. I love it. You have to get used to how the new machine reacts and I think sometimes, without help, the new owner can get frustrated. With my machine machine quirks, i called my dealer and read lots of forums, and figured my machine out, and think it is wonderful.
The stitches are beautiful, DFS, cutter, knee lift, sturdy, no vibration at high speeds