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@hoonz
They're both good. Sealed is set and forget, but they are heavier and have a little more drag unless it's a top of line one. Cup and cone are lighter and generally spin better in my experience. The bearings are also closer to the crank arms. I've got the original cup and cone BB in my tourer. It's a tange with seals etc. Must be close to 20 years old and still going strong. I serviced it (just a clean and regrease) before going on tour and had to adjust it once in 2500kms of touring in all weathers.