I use one of the hopping feet that came with my Juki 2010 for FMQ - I did modify it with all of Leah Day's recommendations. I fixed it so that it doesn't hop, adjusted it so that it doesn't press so hard on my quilt sandwich, and cut open the front of the toe. I love it! The modifications almost instantly moved me from FMQ that I was embarrassed to show anyone to finishing several quilts. I'm still learning, but the improvement is much quicker now.
The walking foot that came with my Juki is very loud and slow. Jacquie Gering recommended a Janome walking foot in one of her walking foot quilting classes on Craftsy. I bought one and found it to be a terrific replacement. I found it on Amazon by searching for Janome high shank walking foot.