Denon AVR-2808CI or Onkyo TX-SR805?

Hi. I'm putting together my first home theater setup and so far have purchased a Samsung LN46A650 and the KEF KHT 3005 SE 5.1 speaker system. I'm leaning toward an Oppo 981 as the source and am weighing the Denon vs. the Onkyo receiver. The setup will be in a 15x18 foot family room that opens up to a kitchen around the same dimensions. I'll need a second zone because I plan to eventually run a pair of speakers to an adjoining patio. I'm a newbie, so I'd like to have a receiver that's fairly easy to set up and operate. Any opinions as to the best receiver for me?