When I was looking at receivers last year, one combination that particularly tempted me was the Onk 905 and the 685 Theatre.
If you haven't got room for the boxy rear speakers, you could opt for the B&W M1 speakers which are much smaller, if memory serves, this is the very set up owned by professorhat, so he would be better placed to offer an opinion (but I think he's happy).
One thing I would say about the 685 theatre though is when you audition it, consider forking out for the ASW610 sub instead of the 608. Not doing it down (it does a surprisingly good job for the size), but I found it a little boomy for my taste and preferred the 610. It all depends on the size of your room and your own ears though!