I would look at Sears Kenmore machines as they tend to offer good value. They are supposed to be re-branded Janomes. You could also shop for Janomes online (some good deals).
Also consider going to a sewing machine dealer to see if they have used machines that do want you want in your price range. Often you can get a much better machine with more features buying used. It's a lot like cars; some people trade in their machine for a newer model regularly.
Stay away from Singer and Bernette in this price category. I also probably would stay away from Elna in this price range.