In my experience (and I've done more than a few Subies for our local Subaru club), Subaru paint is moderately soft, and pretty easy to correct. I'm usually able to get out swirls and light scratches with Sonus SFX-1 or Hi-Temp Heavy Cut. Both of those polishes work well for me, and usually finish LSP-ready if used with an orange light cutting pad (if you have to use a cutting pad, you might need a second round with a lighter polish).
IMO, the worst thing about Subaru paint is that it's pretty susceptible to rock chipping.
Tort