You will find the featherweight will sew and sew and sew and always have the most beautiful straight stitch. Any machine that will also zigzag can not hope to achieve that straightness.
Mine is a joy to use and requires only a blowing out of the lint and a few drops of oil now and then. With all metal parts (except for the belt) there's no plastic gears to wear out like in the newer machines.
And it's cute and easy to carry around too.
Despite it's small size the throat space is only slightly smaller than my Brother that is an almost new standard size machine.
Now my Singer 126U is the one with lots of throat space. . . It is also a somewhat older straight stitch only machine. By the way the U stands for upholstery so it is also heavy duty and will even sew lightweight leather.