I'm currently replacing a 10 year old Marantz 2ch stereo receiver. Have enjoyed the Marantz sound while paired with Paradigm bookshelf speakers and some future surround speakers (probably paradigm as well, although open to suggestions). I mostly listen to music although one reason for the upgrade is to enjoy surround movies in the future. Looking for best sound while not spending a lot of $$$ and enough options/connectability that it will last the next 10years like my last one. Debate: "refurbished" model 7400 vs. "new" 5600. Questions: Does the 7400 offer lip synch? I don't need this now, just don't want to have to upgrade should I require this in another 3 years. Anything the 7400 doesn't have that the 5600 does or vice versa? What upgrades have been made to the 5600 over the 2 year old 7400. Any reason not to go with a refurbished 7400? Anyone auditioned them back to back? Difference in sound quality? Obviously its a little hard to audition a 7400 in the stores given its been replaced by the 7500 which is too much $$$. Like the 7400 remote and power more. Anything else I should consider when evaluating these two? Thanks for the suggestions.