Arcam AVR600 vs Marantz AV8003

I own a Marantz AV8003 and its great. However I am tempted to switch to the new AVR600 by Arcam. I would use it as only a pre/pro running my Halo A21 and Cinepro. I use to own a AV9 and loved it for two channel. I cant afford the up and coming AV888. Thoughts, comparisons would be deeply appreciated. Im mostly concerned about the Dacs for two channel as Im sure they both do great for HT.