Well, struts and springs were installed tonight, and I still have that bloody noise! (Sounds crunchy going over some bumps)
From research I had done it sounded like the springs were sagging and rubbing against itself, but now I don't know what else it could be... bushes have been ruled out, suspension has been ruled out.
We're going to jack it up tomorrow and check with a little bit finer detail. Will post any results we get!
So, I ended up getting BOGE (which is a re-badged / same production line as KYB) and Kings, and I can tell already I'll need to replace the rears, now... *sigh*
But the ride is a little bit more comfortable, so there's a plus