You'll be familiar with the Denon operating system and the X2700 will be more or less a direct replacement for the X2200. The Sony is a four year old unit now and if you have a 5.1.2 speaker set up there are known problems with instigating DTS:X with speaker positioning. It's a problem of Sony's own making as no other manufacturer has such problems. It is unlikely to be rectified. I would choose the Denon.
Your thread title is a bit ambigious and may stop others looking a replying. Perhaps you should edit it better to reflect your question.