-
A cup and cone bearing is a type of angular contact bearing, so smiliar wheels built with these hubs instead of radial bearings hubs will be stiffer and more predictable when cornering. But the trade off is the higher linear friction than a radial bearing because of the axially oriented contact angle.
Also just saying .. a loose cup and cone bearing allows for fairly slack manufacturing tolerances ..
Personally I don't like how Shimano wheels come with cup & cone bearings.
I'm using some cheap Prime wheels and they've been decent enough.
https://www.wiggle.co.uk/prime-peloton-road-wheelset-1/