sivat

Loose bearing will always be smoother that a sealed bearing. This is true for hubs, headsets and bottom brackets. If I had a bike that would only be ridden on dry days, in clean conditions, and I had the time to regrease the bearings pretty often, I would only run loose bearings. Since my bike sees mostly dirty roads, often sandy, sometimes wet, and I'm lazy, i'll stick to the sealed bearings.