I have been moving to Catalyst pedals from “clipless” (clip-ins). The flat pedals are easier and safer To ride in traffic on a Cruzbike.Just put on Pedaling Innovations Catalyst on S40. First ride was 90 miles. No foot or leg pain. Great grip. I felt like I could move pedal spindle to mid-foot and develop more power.
I am going to try clip-ins too, as I have a pair and shoes I can borrow but not sure they will be an improvement on the Catalyst.
I feel like I am slowly getting the S40 and my body fitting together well.
I have been using the Catalyst XLs even though I only wear size 10.5/44 size shoes. It seems that I do need the additional pedal surface for midfoot placement.
Otherwise, there are many other flat pedals that do the job. I recommend convex flat pedals for midfoot position. One-up composites or Wolftooth Ripsaws.