Originally Posted by
Baftap
I started with the red cleats (basically thinking my AARP qualification and history of bad knees would require them). However, I switched to the grey cleats when the reds wore out and I'd never go back. Much more comfortable. I thought the reds felt "squirmy" by comparison, and my knees feel better overall with the grey's.
I use the Red Cleats and have felt that same "squirmyness" I may have to try the Grey ones now.
I have no real problems with the Red though so it can wait till they break or wear out.