Sorry to hear about the bearing troubles.
This brings to mind the need for a FAQ regarding the common noises coming from the rear end and their causes, specific to the common Foz issues.
E.g., rear bearing noise, rear diff noises, tire noise, etc.. and how to determine what you've got going on back there.
I realize all this is findable, but it might be nice to put it all together. I'm not new to cars but am fairly noobish to Subaru, I can imagine someone who isn't a "car person" could really have an advantage knowing how to pinpoint such issues rather than relying on a mechanic to give them the most expensive option.
I'm even willing to put the list together, but the data needs to come from folks who know more than me about the topic!!
'01 S - "Scruffy"