I have used a 301; Got it at a garage sale. It was my first experience with a slant needle, and it took a little getting used to. For some reason, I had a little trouble judging where the needle would hit when the needle hole was covered with fabric. This isn't a huge problem, though. I taught my stepdaughter how to sew on this machine, including button holes, and ruffles. I ended up giving her the machine because I had extras and she had none.
It's a great machine, reliable and sturdy. Actually, I sort of miss my 301 now that it's gone.