I have five ten kestrels, spesh 2fo clips and clip lites. Thet all have there minor problems.
The spesh clips, I don’t like the plasticy upper, it doesn’t conform to the foot very well and gets uncomfortable after a while around the midfoot area where you fasten them up.
The clip lites are better in that respect, but the uppers are still pretty rigid, they really expect to make your foot conform to the shoe not vice versa. Also the toe box cuts in narrower than the original clips, on me it crunches up the smaller toes just a tad.
The five ten kestrel are the best of them IMO, stiffer and lighter than the other and also more comfortable, but the toe box is very flat it feels a bit weird and doesn’t really allow you too wiggle your toes around.
They are all pretty similar for hike a bike stuff
I find I like to kick them all off to give my feet a rest if we stop for a cafe stop.
Have a pair of the specialized 2F0’s, quality is much better than 5.10’s, they also dont’t soak up the water like 5.10’s do and dry out a lot quicker.
I find the kestrels and the spesh 2fo shoes indistinguishable on that front.