If you are looking at HK, definately consider refurbs. Harman Kardon is called harmanaudio on ebay and sells directly to customers from ebay. The prices are very low. I bought a drefurbe stereo receiver that MSRPs for $449 on harman kardon's website for $193 with shipping off of their ebay store. Very nice.
If you don't have to have the latest stuff, the HK AVR 630
could suffice. If you must have the latest, perhaps the HK AVR 635
would be for you.
Lastly, if you'd like a newer model with a silly amount of power, try this
. At 7x110 wpc, and 55 lbs, it's a beast.
The 80s are awesome, but my concern was that the money spent on the 80s in an HT system could be spent elsewhere if you weren't buying enough power to make the upgrade a concern. However for two channel, I've read their bass makes a nice difference, especially if you don't like having a sub on for two channel.