Scott,
Febi is a logical OEM source for hubs, as they were OEM for a lot of VW parts. I use Febi ball joints.
What I've found w/ A1 VW hubs/wheels bearings, is that they're a consumable product. I've heard that cryo-treating the hubs (legal AFAIK) prolongs their life. But, I don't think anything will help if you don't have the axle nut tight enough. I subscribe to the 'jack handle over the breaker bar w/ three friends standing on it' approach. I really don't think there is such a thing as 'too tight' for them. My friend has a 3/4" drive impact gun that's hooked to a compressor that normally runs at 175 psi. I think it moves 35 scfm @ 90 psi. I've never measured the torque, but I'd bet it's North of 400 ft-lbs.
The moral of the story is, use good parts, torque the crap out of the axle nut (new one every time it's off), re-torque them every weekend, and change them every 5 or 6 weekends. It's cheap insurance against the alternative. Also, just about everyone that I know that races and A1 VW w/ stock hubs, has had one fail (myself included). Some have been lucky, and not had the wheel leave the car. Others not so.
Also, I only use German knuckles, not the Brazilian ones.