I agree with Duffinator 100%. You will need a very beefy amp to truly get what those Veratis are capable of out of them. Here is a link to Harman Kardon's online Ebay store. It is actually Harman Kardon selling their refurbs and they are backed by a 100% Man warranty.
Harman's ebay site . It seems that there are a couple of goodies going today by the way. You can buy a refurbed 7200 from Harman's own website for about $900 or a 7300 from the same website for about $1300 by clicking
here . The ebay auction will close for most likely between $800 and $900 dollars and the unit will be coming from the same place so I'd go the Ebay route.
I just don't think that Marantz, Denon or Yamaha receivers in this price range will compete with these Harmans power wise, and Veratis are some power hungry speakers (not a bad thing, just needs to be factored in).