I have a 15-91, 201, 66 electric, 66 treadle and a 301, that being said my favorite is the 15-91 for FMQ. I am partial to vertical bobbins, not everyone is. I agree with NZquilter all the old Singers make beautiful stitches and I prefer them over my modern machines, a Janome and a Brother. Good Luck on whatever machine you decide on.