OK I've been going through my mom's machines and some of my own and am wanting to try quilting my next quilt on one (thinking on the Singer 15-90) will any darning foot/free motion foot for low shank work? or walking foot for low shank? or is there any particular brands that work better? I'm wondering because I read something somewhere(sheesh should write down where so I'd remember but was probably here LOL!) about newer walking feet sometimes not feeding right on the older machines even though they're for that particular shank. so far the plastic 1/4 inch foot I got for piecing is doing ok on the 15-91 (though the plastic sorta ruins the 'mood') but wondering about the attachments for quilting.