Bernina 440 and 550 have a small throat 9" .therefore free motion quilting a large quilt is a major job. Not impossible.
Also I for get the stitch regulator once I could free motion.
The juki range have an 11" throat but don't know their embroidery ability.
Janome have a wide selection and I enjoy their embroidery feature
No nothing about pfaff but would like one.
Also brother offer a wide range with embroidery features.
With which ever you select look for a local dealer. With my brother I had to travel long distances to get it repaired. Big disadvantage to dealers doorstep.