There are about 6-8 66's in my collection. Some of them are clones, but they are all wonderful. They get used, (as are the other vintage machines,) in my youth sewing classes. The kids can't mess up these older machines as easily as they do the new ones. The 66's are workhorses with which I'd never part. The 127's have a long history, and many models in their category. There was a great article, with lot's of links, published recently in Wikipedia about the 127's. I share the, "wouldn't part with either of them," opinion. However, the "value" is an individual preference.