Edie, only Singers are FWs. They weigh about 11 pounds. Their claim to fame is their portability and, of course, their reliability. Our 'old' heavy weights are just vintage machines. I want a White because that was my mother's machine of choice. Singer was Grandma's.
Type 'vintage machines' in the search box and start reading the almost 500 page post about those. Interesting reading. I just bought an 1952 Singer. I assumed because it was little and black, it was a FW. Surprise, that little bugger weighs 30 pounds.