The higher end Singers are probably ok, but I got one about 2 years ago for around $350, supposed to be a quilting machine. It was horrible for that! I gave it to my son and my hubby talked me into a used Bernina. I am so glad, because if I had only the singer to use, I never would have quilted again.
Good used machines are a great idea. Talk to a dealer. I know there is a little beginner Janome for $400 new, perhaps a used Janome, a little above beginner would be afforable.
Good luck.