Straight stitches for me. I don't even use the simple zig-zag very often. If I want a serpentine, I create that "look" by moving the fabric free motion style. I will use that method particularly on "busy" fabrics where it blends into the fabric beautifully. All the extra stitches available on my machine are dormant and just are not even considered. Like others, I looked for a machine that had the minimum fancy stitches but found it impossible to find a simple straight stitch machine without going vintage.