Iceblossom:
Yes, I might be holding too much faith in the programmable seam lengths really being a help. They would require that I start at a pretty precise place so may not be as helpful as just using my markings on my sewing foot to guide me in figuring out where to stop. And no automation means using the old noggin, which is always good, since it seems to be developing more and more rust between brain cells.
The Pfaff 7570's had a clear place to go to program a seam length. With it's sister, my 7550, I suspect if I use the 7550's archaic "Creative Designer," I can program in a stitch length, but oh so cumbersome, when no doubt I have several lengths to program in.
But I will persevere.
The antique Pfaff sounds wonderful to me!