OK. I understand the difference now. So starting with the 400 series machines they did zigzag without an attachment?
Hummm....a few days ago I told Billy he had started me on the hunt for a 501 after saying he thought they were about the best Singer ever made. So now I will probably definately want to find one.
My new Brother machine does all that fancy stuff, though, so....DH is probably going to nix the "buy another machine" idea. He already doesn't understand why I "need" the 5 I have!! LOL