@werdel,
For the best information, I suggest contacting John Rutan at Audioconnection( that's his Agon name, so you can PM him, It's also his store, so you can call him). He know Vandy inside and out, and knows amps and everything stereo. He can give you the best advice, outside of Mr. V. himself.
Otherwise, I know that Vandy's are very good with McCormack, Atma-Sphere, Belles, and Ayre. I don't know Aragon, but I'm sure Johnny does.
Bob