Originally Posted by
Grasschopper
You can get ceramic bearings from Soul as well.
Edit: The upgrade cost is $100 us which makes them look more expensive than the Williams 19 but don't forget to add in the shipping and an extra $30 if you need a Campy freehub. With a Shimano freehub, to my door the price is $4 less for the Williams...but the S2.0 is a little more than 100g lighter. The S2.0 would be cheaper and lighter if you need the Campy freehub (like me
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It would seem there are different grades of bearings for roundness...and some ceramics are gonna be a inferior to some steel. So you have to sort of check that out too. Beyond that, I don't know a thing about the grades or costs or differences in performance. I won't guess, but if I had to, I'd call it marketing hype. The Soul bearings are already ridiculously smooth...could they get better? Doubt i could tell.