Be careful with refurbs. I bought a Marantz SR6007 from A4L and was not able to take it out of the box and install it in my new house until it was finished - a year and a half later (about a year later than I had anticipated). When I finally was able to take it out of the box and hook it up, it turned out to be a complete dud -- none of the audio out ports worked. Because refurbs only typically have a one-year warranty, Marantz refused to help me. They wouldn't even split the cost of repairs, since the unit they sent me obviously had not been bench tested as they claimed it was. They simply refused all responsibility for sending me a bad unit. A4L was of no help either, since it was a factory warranty. Needless to say I'll never buy another Marantz product as long as I live (and I've bought half a dozen over the years).
I had also bought a refurb Denon X4000 from A4L as well, to go in another room. Unfortunately, it has now failed after one month of perfect performance. The over-heat sensor is malfunctioning and turning it off (plenty of ventilation all around as it's in an open cabinet). The good news is it's only been 11 months since I bought that one so I can send it off for repairs and the factory can't weasel out of it. (Marantz and Denon are sister companies, apparently).
So, bottom line -- if you're buying a refurb, be prepared for problems. The weird thing is, I've bought dozens of refurb'ed devices over the years, from A/V gear to computers, and never had a problem before. After all, they've supposedly been bench-tested and certified as working when they're shipped out to you. But now I've had two bad experiences with AVR's in a row, and one - the Marantz - will end up costing me dearly, more that I would have paid for a new one with a full 3 year warranty.