I prefer an open toed foot. It is 24 on my older BERNINA 1130. On my newer machine it is a hopping foot and does not have a number. I like them both. My older machine had a foot that was clear but solid and I did not like that one at all. I plan to look into the new #72 ruler foot. I am interested in doing that type of thing, but don't quite fathom how you would handle the bulk of the quilt and hold the rulers also. It seems like walking and chewing gum!