I agree with Mr. "deftech..."
before you drop $1.5K to $3K on speakers, you really need to audition as many different units as you can. Granted they might not sound the same in your home and they do in a special showroom, but you will learn the differences between types and brands.
You have a good receiver, so your speaker choices can run from flat panel Magnepan's to multi-speaker towers. Have fun listening to what is available and good luck.