The 99’s are one of my favorites. Put some good oil on the bobbin area and below, keep it clean and you have a neat little machine. But my favorite thing is to use it for button holes. The gadget fits it in such a way you can change out the bobbin with out removing the button hole maker and you can look to see how much thread with out removing it. Get the one in the green box with all the cams. Perfect buttonholes every time. Nice.