The Juki is a popular machine around my area. It has a fairly large harp space with a variety of machines some full of bells and whistles others just forward and reverse stitching, they are workhorses and heavy. Also have someone in the area who will repair them if necessary.
I bought a brother not on your list but regretted the fact I had a 200 mile trip for repairs. This fact put me off buying another.
im looking for a new machine and the pfaff is on my list. I've spent a day doing a class and using the machines. They. All worked very well.
if memory serves correct all the machines are heavy and not easy to transport to classes.