I wouldnt spend the extra money on high $ bearings then be forced to maintain then from the high price.I prefef $1 bearings & just replace them more often=less hassle unless you race a super competative group of guys & feel you can exploit the lighter weight & lower rolling resistance they offer.Or you could just crash one less time per race & come out with the same benefit.
As far as the best ceramic, I use(as well as everybody I know) TKO in my motors & they have never let me down & last far longer than the stockers but,I have no idea who to use for the rest of the car but their a good place to start.