Speakers for Rotel RSX-1057

I am trying to put together a 5.1 surround system to pair with my Rotel and my 65 inch Panasonic Vierra plasma. I found someone selling a KEF PSW3500 sub and wondered if I should pair that with KEF speakers, center, etc. I could also go in a different direction all together. My budget is $2000. Any suggestions would be appreciated.
PSB would be a good match.
Rotel seems to enjoy some great synergy with B&W. I imagine the wide-ranging B&W product line would allow you to find something that fits within your budget.

Happy listening,
I second the PSB suggestion: http://www.hometheatermag.com/floorloudspeakers/psb_image_t6_speaker_system/

You can save quite a bit by using the Image B6 for the left and right instead of the floorstanding T6. I'd also suggest using an SVS subwoofer instead of the PSB -- apply some of the savings towards a better subwoofer. For eaxmple: http://www.svsound.com/products-sub-box-sb12nsd.cfm