a protostar with a 10 ball is epic too
Gold plated bearing on my gold YYR Glepnir
a KK in a NOVA surprised me 
Spyy speedfreak with KK
Gnarwhal with CT bearing. Amazing combo!
KK in everything
A yoyo with whatever bearing came with it (as long as its flat)
Crucial concave in peak
Hsping hybrid in d bearing skywalker
10ball in c bearing skywalker
Do you really notice any difference in play with the gold bearings? just curious
My gold bearing spun waaay longer than any other bearing I had, but spun slower. It made up for it because it could hold MANY, and I say MANY, string wraps and is pretty quiet after play.