I traded my Pfaff Smarter for the Quilt Expression 4.2. The Smarter totally broke inside and could not be fixed..........not just the salesperson and service person's opinion they showed me inside and it made TERRIBLE noises.
I did not like the thread cutter on the Smarter. The 4.2 cuts from a different direction and both threads go to the bottom.
LOVE my 4.2