I learned to piece and quilt on an itty bitty Brother too! I think maybe 4.5"? About the size of my fist, and I have small hands.

Oh, the quilting yoga I did on that little machine trying to push twins and fulls through it while not dragging it across the kitchen table.
How did/do you like your Janome? Though I'm pretty settled on eventually getting a Juki Kirei HZL-NX7, I've toyed with the idea of trying out a Janome MC 6650 if I ever get a chance. I use a cheap little 4" hoop embroidery machine for quilt labels so don't need the letters, but I do like to use decorative stitches on non-quilt things.