I have the powergrip and find it works well ... but at the same time I prefer cleated shoes and shimano spd's. For a while I was going to use the powergrips so that I could use hiking shoes, but I found that my feet ached much more without the bottom being rigid enough, so that is why I went back to spd's. I have the types that have a regular surface on one side, for those rare times I hope onto the bike with regular shoes.