I do really want a vintage singer for frame quilting. Maybe I am nuts! I also want my replacement machine to do a really great job with FMQ, have a compatible stitch regulator, and not break needles and make rats nests like my current %@*! Viking does. So I think I am going to "settle" for a modern machine.
From the picture I posted above, it seemed like maybe that was a lovely vintage mid-arm machine. The shape is so graceful, it really looks like a much larger throat machine than it is.