Periwinklewrote a review of Shimano SH56 SPD Cleat Set on August 26, 2019
Familiarity: I've put it through the wringer
I came to mtb from road cycling and kept crashing on the trails because I couldn't get my foot out fast enough, especially on more technical terrain. I was using the SH-51 cleats at the time. A friend told me about the SH-56 and I have never gone back. I love that the cleat releases quicker and it's great for someone new to mtb. I will say that I'm more experienced now on the mtb and have noticed many times that my foot will release sometimes when I don't want it to, but for me I'd rather have the assurance that I'm able to get out of my pedal than to be crashing every ride because I can't get it out.