This is a fairly common replacement part. Not the easiest to install but as a split race bearing, it's a must if you've removed your hubs.
WE HATE TO BURST THE BUBBLE but, we've seen no difference in FAG/SKF versions of this bearing. Go ahead and waste some time on the internet looking for love/hate stories on each. You'll find them. Rarely will you find someone like us saying; "we've installed hundreds and we see no difference".
***THESE WILL ARRIVE AS SKF OR FAG. WHICHEVER THE CURRENT SUPPLIER HAS IN INVENTORY. IT DOES VARY***
Perhaps the stories come from bad installation advice so, here goes: as a split race bearing, these are meant to have the control arm pressed down onto the bearing. Here's a little video that should help: