I bought a nine-year old, never used Singer to take to classes, etc. because it was very light (meant to replace the FW). However, it made so much noise that even after having it serviced, I didn't like using it. Now it lives at someone else's house for me to use when I'm there. Back to the 1949 FW for portability.
My piecing machine is a 1995 mechanical Bernina 930 Record which absolutely hums along; I FMQ small quilts on a Juki 2010Q and I have a Pfaff Grand Quilter on an Inspira frame for the larger quilts. Each has it uses and does their job beautifully.