I'm pretty sure the Juki only does straight stitching. If I were you, I'd look for a used Janome 6500P. Many quilters love this machine, and it has a bigger harp than normal which makes machine quilting easier. The only thing it doesn't have is a free arm (but your newer Singer would have that).
Have you checked for used machines at the dealerships in your area? You can typically get a much better machine for your money by purchasing used from a dealer, as many people trade in perfectly good machines for a newer model.
Edit: Sorry, the Janome 6500 might be out of your price range, although maybe not if you can find a used one.