mmmm, I think my current bookshelf speakers are a better sounding match, with my AVR. I do have the Elac B6.2, which were okay. So, I do know the sound differences and the RP-500M II is better. If you need another set of the ELAC B6.2, I have for free. O, and the matching center channel to go with it.
@Sachb Glad you are happy with the ELAC's and were in my budget range at the time.