I’m going against the grain here . . .
If your axleshafts are not making noise, I’d go ahead and have the boots replaced on both axles
The reason is this . . . I’ve had EXTREMELY bad experiences with cheap Chinese new axleshafts. And that is what the parts stores often stock
I’ve also had bad experience with Chinese remanned axleshafts.
I’ve had good experience bringing my axleshaft to a “mom and pop” shop that actually disassembled my own axleshaft and replaced the joints, boots, and clamps. The price was quite competitive, and the axleshaft lasted a lot longer than the cheap Chinese new axleshaft. I suspect pride in workmanship had something to do with it.
On the other hand, if you’re getting the parts . . . whether it be the boots, or the entire axleshafts . . . from the Subaru dealer, or if they’re going to do the repair, I have no problem with that. I just can’t see them using junky parts. But it will be expensive.
EMPI makes pretty good CV boots, by the way . . .
I have no problems with Chinese parts . . . as long as they’re good