I was in a similar position a month or two ago. I ended up getting a new 2310 from Richer Sounds for £609 through a pricematch deal.
I specifically wanted the integrated GUI over HDMI and the video processing so it was pretty clear cut for me. I've got a Denon dvd that has AL24+ processing and I'm in a relatively small terrace house, so the extra wattage wasn't that important to me.
All in all, couldn't be happier with it :-D They're both great receivers, so if audio is your main focus, maybe get the 2809. If you're interested in video processing, get the 2310.
Best of luck with it.