I've resisted commenting on Juki's until now. Just have to....
I know folks in other commerical/industrial sewing applications that have nothing but Juki machines. These puppies go like there is no tomorrow. These folks cannot be without their machines and they sew miles of fabric on any given day with them. From very thin fabrics to very heavy and many layers of heavy fabrics.
One day, in my dreams, when I have boatloads of room - a Juki is in my future.