I have a bernina 430 with BSR and a pfaff qe 4.0. The bernina sits in my closet while the pfaff is in my sewing cabinet. It is newer, and I don't have space for both of them to be up. The things I really like about the pfaff are the larger throat space, thread cutter and the idt. I have had my frustrations with it but I think I am getting them worked out. It does seem to be picky on thread and tension, but you have to play with it. I don't believe I ever had to play with the tension too much on my bernina. But, the extra throat space is something that would be number one with me.