I just got a new light weight as a back up machine. I plan to use it for classes, vacations and mostly so I can do chain piecing on the porch on nice days. My regular machine is heavy and I don't like moving it.
I have an older inexpensive machine, I think it's a Kenmore, that I've had for years and years. I'll give it to my daughter when she settles into her first post college apartment. I have a treadle machine that I use as a furniture piece in my dining room. I got it years ago solely for the furniture. The machine doesn't work, but does look like it could be repaired and restored if I want to take on that project some day.