I rode Look for years and was constantly annoyed by the squeaking of their cleats. Something about their plastic makes it squeak at the back edge clamp.

I changed to SPD-SL about a decade ago and have no plans to ever use anything else.

You can put a blue cleat on if you want less float than the standard yellow tipped cleat.

There's not a whole lot of difference functionally between any of the Shimano 105/Ultegra/Dura Ace pedals from this generation or the previous. They made the platform wider with the 7810 and everything from there on out is just lighter or slight differences in bearing quality. Very slight.