I absolutely love love love my Juki 98Q and Grace GMQ frame. HOWEVER, I now want a long arm. And really, I don't think the price is that great- for a couple hundred dollars more you could have the same outfit brand spanking new.
I would test out the Voyager. It's more than twice the quilting area of the Juki, once a quilt is rolled. I'm dreaming of a long arm, but practicing with what I have. If you are looking just for a quilting machine- I'd definitely go with the long arm- AFTER I tested it out.
For a machine to piece and occasionally only quilt on a frame, the Juki is wonderful. Even when I get my long arm, the Juki stays.