I had a Viking D1 (I didn't need the embroidery unit) and traded it for a Pfaff, which also handled more different types of fabric than the D1 and still has some fancy stitches and an alphabet.
My main sewing machine is my 1952 Featherweight. My only caution is check where the machine is made. As stated by others, many of the lower end machines from most of the companies are now made in China and seem to have issues. That also goes for the reintroduced Singer Featherweight.
Definitely try to test drive any machine under consideration. If you just want one for piecing, with careful shopping, you can find a Featherweight for around $300, depending on condition. Ebay is one place to look for older machines and check the sellers feedback. Do research to see what are good prices.