bw77:
The original Eggbeaters (no platform) were developed primarily for MTBing with 3 main advantages. Easy 4 sided entry as Ray indicated, good mud shedding, and small cleats so easy to walk in/on. If you have a good stiff (carbon?) shoe, I believe you can use the original (no platform) Eggbeaters on any bike.
I have the original Eggbeaters on my MTB and Speedplay X5's on my roadie. While I like the float (26 degrees?) on the X5's, I believe 15 degrees would be enough. The 26 degree float means you REALLY have to rotate your foot to click out. OK, this may sound stupid but a couple weeks ago, I must have forgotten which bike I was riding and rotated only slightly to click out (as I do with EB's) and WHAM, went down. (I think EB's have 6 degree float which is enough for me.)
I'm now considering Candies on my roadie because I've always liked my EB's and I have a Specialized Pro Carbon shoes. Or, I may go cheap and just put Eggbeaters on my roadie. One question sticks with me. I remember reading somewhere that Crank Bros. pedals may cause wear on the carbon sole.
Can anyone comment on this? Anyone out there using Crank Bros. pedals with carbon sole road shoes? Any issues?