Happy birthday Judy! May you have many more.
In that price range, I'd visit the Bernina dealers and see what used machines they have to offer. You could get an older, non-computerized model like the 830 Record or the 930. They are real workhorses and either model would be a great back up machine. (I'll admit my bias: I really love those older mechanical machines.)
Of course, if there's no other machine out there that strikes your fancy, a gift certificate for supplies from one or two quilt shops would make your day, don't ya think?