I have several different brands in my little collection and, I have to say, it is the Pfaffs that have really won my heart. As mentioned by others, the IDT feature is wonderful and they just seem so much smoother than my other modern machines.
My first Pfaff purchase was a used 2054/56 and it is a great machine. I quilted my first cheater quilt using invisible thread both top and bottom, because I didn't know any better, lol, and this machine didn't blink once!