I have the Bernina Q20 and love it. When I purchased, I selected the table that I can raise or lower. I can sit or stand. The added benefit is the size of the table which becomes a work station. I have a medium-sized cutting mat on it with plenty of room to hold tools and fabric.
The Q20 has a built-in stitch regulator, easy adjustable tension, stitch length, easy threading, huge bobbins, and many screen messages, particularly the one on low bobbin. Bernina offers payments over four years at no interest which could be a selling/buying point. — My Q20 was used from the dealer. The former owner was moving up to a big long arm.
Good luck in finding a machine to suit your needs.