For me, the fastest & easiest solution when the awful Shimano M552 cranks failed, was to get turbine cranks. The cranks on my trek 6300 bike failed, so I de sided to switch to my trusted Turbine crank, plus crisp King bb, so I decided to try Atlas cranks, I thought I would notice the difference, and I did.
I am about 75kg, (but this number varies on how much stuff I got in my backpack, I have not weighed in a long time, so I am probably heavier now.) with all the gear on
I have read reviews saying that there will not be noticeable differences, that was coming to a heavier reviewer, but pink bike review stated that there was a difference, their review is good so take a read d: https://pinkbike.com/news/race-face-atlas-cinch-crankset-review-2016.html
The crankset is quite similar looking, but there are several differences, the turbine cranks look pretty similar to the Atlas cranks, but the Turbine have a lot more material shaved off in arm where the bolt is & on the tip, the is also a difference in how much material is shaved off behind the crank, the Atlas has more material near the pedal.
for commuting, or xc/light trail, these cranks were stiff enough, but on rougher trails, I could feel the difference in stiffness or another technical riding. I think turbine cranks have a good stiffness compromise & of lightweight.
First ride with Atlas cranks:
Even before riding the cranks on the trail I could feel the difference in stiffness, just by a quick test in being on the bike in the kitchen, I tested a lot of positions, but then I took it for a spin on the trails some days later.
The first ride on the trails, I felt the difference, even though my frame is quite flexible in the BB area.
I could feel that the Atlas cranks were stiffer while riding technical trials.
Both of the crankshaft a nylon preloading, which has a small Allen screw, which was easel rounded off even though I was very gentle.
I think turbine cranks have a good stiffness compromise & of lightweight, so perfect for a commuter bike or for lighter riders.
I am all for everything that gives me better control, and stability, which both Turbine and Atlas cranks gave me over the cheaper much more flexible Shimano cranks I have ridden in the past.