My old Kenmore, hands down! It was my moms, about fifty something years old, I truly think it would sew through a bed of nails, purrs like a kitten. Have had some work done on it, not much, just a new cord and foot pedal, it was in a flood, stayed under water for 3 days back in the early 80's. Got a Singer Quantum Stylist 9960 just over 2 years ago, wanted the fancy stitches and whatnot, it's a good machine, despite what everyone says about Singers, but I know it won't outlast my old Kenmore.