patricej

Get the Janome brand O2 quarter-inch foot.
it's a modification of the O foot that is better suited to the bulky seam intersections we so often create in a quilt top.

i'm not "dissing" other brands. in fact, i usually go generic to save $$$.
however, when it comes to feet for my Janome machines, i stick with those made by and for Janome. i've tried using both generic feet and those from other brands i've owned that fit my Janomes. i cannot see any difference - i confess. but the "real thing" always out-performs substitutes.

the good news is that there isn't usually much difference in cost.