The room is 50% of the sound, make sure part of your budget goes into treating your room.
The Rotel 1585 has 5 channels I think. That means you will be able to bi-amp whatever you choose. I would get a second SVS pb4000 for better bass response.
Finally if you have a local dealer try comparing an electrostaic like the Martin Logan Classic ESP 9, a classic like the Klipsch Cornwall, and then something known for extreme accuracy like the ATC SCM40.
When you compare speakers that are very different you will hopefully learn which is suited for your taste.