My vote is for the Frogs. I like the float which lets me change my foot position a bit while riding and I find them easy to unclip form. Before the Frogs, I had Time pedals (earlier version of these) for a number of years. They're pretty good but not my favorite. And when I first went clipless I tried the low-end Shimano with the cleat on one side and flat on the other. I like the concept of that but I didn't like the fact that my foot was fixed in place. When they were new they were kinda hard to unclip from, but with some adjustments and the corners rounding off some (after a few weeks of use); they got easier to unclip. I've heard good things about Eggbeaters and the other pedals that Crank Bros make.