To me, the 319 is just as complicated as the 401. Levers to slide, keys to raise and lower, nobs to turn, and there's no instruction chart. At least with the 401 you pop open the trap door and there's a nice chart you can go by to set machine for what you want.
If you want simple, get a 338. Pop the cam in, and go. Only a couple levers to move just like an old straight stitch.
I'm a firm believer in the K.I.S.S. theory. The more simpler the better. That's why I'm still learning how to run that Alden of ours, whoever designed it never heard of the K.I.S.S. theory.
Joe