Got my 530 speakers yesterday. Holy cow! I already owned five of the 590 towers, which I had in a 5.1 arrangement and loved. These 530 bookshelf speakers, used as surrounds, actually almost seem to sound BETTER with my 590 tower fronts than when I play matching 590 surrounds! That doesn't seem possible. But my son said the same thing without my even asking.
Note, however, that I had the 530's on stands pulled out from the wall. I'll bet the sound quality would be impacted negatively if I had them on or very near the walls. I keep my 590 towers closer to the walls because my wife would shoot me if I had those behemoths away from the walls all the time, and I don't want to move them all the time.
I use Audyssey XT32 on my Denon x3400h, and I use the Audyssey app to limit correction to just frequencies under 200 Hz. I have not rerun Audyssey since swapping 530 for the 590 surrounds. Luckily, the app saves each time you run Audyssey, so I can go back to my current room correction if it sounds worse when I rerun with the 530's in place. (No reason it should, but Audyssey can sometimes do weird things.)