I use my treadles: piecing, National Two Spools or Singer 201; straight stitch quilting, 201; and FM a 15-90. I finish off my bindings with a decorative stitch from Janome TB-30. I own other vintage machines, but they just decorate my sewing room bookshelves.
What sewing machines do you own and like to use? You haven't told us what you like.