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@hippy
"I used the highest end enduro angular contact bearings bb90 version for half a year before it stops spinning and sounds like everything has been pulverised inside. LBS warned me against them right from the start when they installed it for me, and sad to say, they are right. Have no idea why they are so highly reviewed, for my case they see just terrible given their prices."
but
"I use S71806-LLB Enduro Stainless Steel Angular Contact Bike Bearing (30x42x7) on my commuting bike. Only on my second set (25K miles). They see some abuse and are used year round. I do have a fairly good maintenance routine however I am not keen on regularly pushing the bearings out of the BB body and only pop the outside seals out to clean/regrease. They are more expensive (I think 20GBP ea) than the equivalent radial bearing, but the design allows all bearings to share the working load rather than 3 or 4. After issues with other "quality" ceramic BB's (mainly my best bike) I am happy to run with bearings that keep my bike on the road rather than in the garage awaiting parts.
I use these bearings with a Rotor 3D+ crankset and it is easy to apply sufficient preload using a combination of washers and the preload ring."