Killer used integrated for

only one person mentioned Rotel. so, here is another vote for it. I prefer it over all other amps I had (Nad, Marantz). 

A used Yamaha A-S501 or 701 could be found used. I have the A-S701 and believe it to be great at it's price point ($750 new).

OP here, went with the open box Marantz pm6006. Price was great, easy breezy purchase from Music Direct. Received in 1 day. We'll see how it performs in my second system which uses my vintage ADS L710's (for now) and Sony BluRay/CD/Sacd player.. Thanks to all who shared their opinions. 

Look on ebay and craigs for older Peachtree and Rotel.   Like this
https://www.ebay.com/itm/Peachtree-Audio-iDecco-Integrated-Amplifier-w-iPod-dock-Black-Used/27455114...

Hope you enjoy the marantz; they really play well and they have gobs of power.