Not sure what you mean by thin soles? I always ran mine with the metal shims to protect the soles anyway.
I ditched egg beaters after getting fed up with pedals that didn’t last a winter and would jsut fall of the axle in the middle of nowhere every 6-8 months.
Shimano are:
1) A heck of a lot cheaper, £20 for 520’s and apart from some minor weight savings and theoretically longer lasting bearings in the XT versions they don’t get much better. Mine all look excessively beater up and scruffy long before the bearings die (and with £12 cleats Vs shiny new pedals for £20, just bin them).
2) More of a ‘click’ in and out rather than the more vague build of resistance at the end of the float in eggbeaters.
3) Adjustable tension, I barely notice it and just leave it on minimum, but some people like to tinker with it.
4) Steel cleats last ages in comparison to the brass ones.
5) They don’t rock from side to side.
Downsides:
‘Multi release cleats’. Some shops don’t know the difference and will sell you these rather than the real ones, the multi release you can pull up hard to unclip, aimed at tourers/commuters.
Avoid the ‘trail’ pedals, they don’t offer any grip, and if I ever end up perched on them it’s because they’ve blocked me clipping in and really wish I was, not through choice.
Unless I was built like a pro-roadie I’d cut off various appendages to save the weight before going back to Crankbrothers.