Which Processor?

I am considering the Krell Foundation or the Marantz AV8802 which will be used with one of Krell's new ibas amps. My speakers are B&W 802's and a B&W center channel. There are two other small speakers to the rear but these will be powered by another amp and are not a concern. The question is: Is the Krell Foundation worth almost twice the cost of the Marantz. Any thoughts will be appreciated.