The FAG models you picked are the top of the line, and have the correct C3 clearances.
I'd suggest them.
The Nachi will get you by, but the clearances are normal and not C3, and Nachi is not at the same level as FAG.
However, both brands are good bearings.
I'd look for the Nachi in C3 clearances, for the best price, and assuming it's just for normal street use. For high performance use, I'd suggest the FAG.