I have an A-965 feeding a Rotel RMB-1066 amp (run bridged for 150 X 3 L/C/R) and I am using the external direct inputs of my old Pioneer Elite VSX-24TX AVR to power all four surrounds.
Speakers are Vandersteen 1C for FL/FR/SL/SR, Vandersteen VCC-1 center and Paradigm Atoms on high stands for BL/BR, and a Def Tech PF-15 sub, fed through both a Paradigm X-30 and then a Behringer Feedback Destroyer Pro (1124P). Sources are Rotel RCD-02 CDP, Toshiba SD-2109 DVDP, Thorens TT/Shure pickup, Dish 500 receiver and several S-VHS VCRs. The front 1Cs are on the stands made for them on spikes, and the surround 1Cs are on a double-stack of cinderblocks.
With better source material, this combo can be awesome. Soundstage is wide, tall and extends into my room and even behind me (in stereo!), although there is little depth behind the front speakers. This might be because of the 55" RPTV sitting between and just behind the front 1Cs. I have had (even before the P-965) a bit of spotlighting in the brightness range (4-8kHz) that is, for me, unpleasant. I have backed off the treble controls on the 1Cs to -2dB, and have installed some auralex-type foam panels on some of the reflection points. While these measures have helped, I would still like to mellow out that brightness range further. I am planning a front L/C/R amp upgrade next Spring. My room is surely part of the problem, as it is an irregularly-shaped basement with a very low ceiling (6'). If you have a more conventional room, I would expect these speakers to work better than they do for me. When set up properly (takes a bit of time), the 1Cs can sound wonderful - detailed, smooth, grain and box-resonance free, with excellent decay and huge 3-D sound stage. They don't do big deep bass, but crossed over at 80Hz, they were easy for me to blend with my sub.
The 1Cs list for ~$800/pr, the VCC-1 is ~$500 and the Atoms are $189/pr. The Def Tech is older, and for the $700 I paid for it, you can get a decent Hsu or Outlaw sub. That puts you right at about $3K.
www.vandersteen.com for more info.