I have a Singer 201, 401, 99K, and 415 I use regularly. One is set up for piecing, one for zigzag, one for quilting, one just because. Then when working I do not have to change things or change threads if i am working with more than one color. I have a red eye that works but use it more as decoration/display in my studio. My son just bought me a treadle but it is still at his house and I have only seen pics. It was made in 1908 and has flower like decals all around the base and fantastic decals on the rest of the machine. I plan for it to also be on display. Besides, I just love the old machines. i don't collect stamps, or china, or knicknacks or other things people collect, I collect machines. What do you collect if anything?