I love Pfaffs and have owned others with the vertical bobbin and I always thought those were the best. So I was a little hesitant about the QE4.0 with the drop-in bobbin. But when I first tried it out, it sewed just as well as. I've now had it a year and have sewn multi-layered fabrics making furniture slipcovers and it never skips a stitch. I have been just as happy with this one as the Performance 2056. I bought this one for the long throat and the auto thread cutter and many other features that make piecing and quilting easier.