I use my regular foot.for.piecing, not a quarter inch foot.
My darning foot (i prefer open toe) is a must.for.free motion quilting.
I just got.a.walking foot but haven't used it yet. On Bernina, it costs as much as a cheap sewing machine! It was a splurge for sure, I had been doing ok (but not great) without it.
I also like my clear applique foot for.satin stitch applique...makes turning corners easy.
I now covet the wheel.foot to do curved piecing and the free motion couching foot.for shear fun. Not sure if I eventually want the 1/4 inch foot, and with or without guide...
(sorry for the random periods between words, my.phone does that.)