Trying to chose between these two on the ecost website

AVR3802 Digital Cinema Receiver, Refurbished by Denon $449
AVR-1083 ( openbox) Dolby Digital Surround EX Receiver Reconditioned by Denon $499

Application will initially just to drive m60s in medium sized room. Will eventually upgrade to surround sound but music will always be the priority. The Denon website does not make simple reading for the novice - no high level view of what one receiver offers over another - just lots of techie stuff.

Any opinions appreciated.