so is it just durability then?
honestly, headsets are the one component that, functionally, while riding my bike, i cant really feel/tell too much difference between a really nice one and a cheapo one.
i mean, ive felt my brothers super smooth chris king and definitely felt the difference between that and a super old headset on my schwinn beater from the 60s....
but it seems like i never need to turn my bars all that much when riding....ive never really noticed myself really turning the bars more than....i dunno, 20 degrees or so. that might be totally wrong, my visual math may be totally off kilter.
i dunno, as long as it turns.....
i like the velo orange headset i got on one of my bikes. seems nice and smooth.