I've been using BOCA Yellow Seal Ceramic bearings in my DB-01 for years now. Best bearings ever.. Sealed and lubed for life - dirt can never enter the bearing and they never need cleaning. Worth every penny for a full kit.. The bearing kits they listed online did not have the right combination of bearings for my DB-01 build. I specified my own bearings and they made a custom kit for my DB-01 and offered a small discount.
I would avoid ACER bearings personally. You can never find detailed specs on their bearing technology, so you don't really know what you are paying for... I guess they hope their sexy models will distract you from caring about their bearing specs... Sorry ACER, no dice.. No specs, no sale...
I bought JAAD Racing ceramic thrust bearings and balls for my diffs. Also excellent quality, although I don't think JAAD Racing is still in business though?? Their products are still listed on
www.racingfactory.fi as a purchasable part:
http://www.racingfactory.fi/products...Bearing-101700
so maybe they are still being made, or they have overstock..
Hope this helps.