Lightning quick DYNAMIC amp in the under $1000 range

A Bryston 3b or 4b or 3bst is in your price range. They should be at the top of your list. They don't get much credit on this forum. But google them. You will be very impressed. I speak from experience. 

@pkvintage : I agree! A Bryston 3B (100wpc) is hard to beat! I bought mine for $500 and a .5 preamp for another $350. Late 80's production, but sure sounds good! A great company!

I have a truly excellent amp for sale on USAudiomart or Audio Asylum in your price range

Its a lovingly used Audio Alchemy DPA-1 (175wpc)

The only reason I am selling is it doesn't produce the spl from my speakers in my large room

Search March 2016 Absolute Sound review 

I own the Newforce STA 200 mentioned by smrex13. It provides 80wpc into 8ohms, however no more than that into 4 ohms. It is highly sensitive, reaching full power with 0.65V input and has 51Kohm input impedance, making it a good choice for use with a passive. Last I saw it was being offered at $449 by Audio Advisor. 

The Schiit Saga would make for a great match with the STA200, having a low gain in passive or tube buffered mode at 1V, 0db according to Schiit.  I am considering the purchase of one myself.

Your Vandy 2Cs do not represent a difficult load for an amplifier, having a relatively benign impedance and moderate sensitivity such that they could be driven by a single ST200 in stereo mode. However if your power needs are greater (do to room and loudness levels), the vertical biamp approach is within budget. 

I also like the Odyssey amplifier mentioned by tomic601. I almost purchased one sometime back. Would work with speakers presenting a more difficult load then the STA200.
 

The input sensitivity of the Nuforce STA 200 is .45 V. Enjoy ! MrD.