I also just received my 3310. I'm replacing a Denon 2807 and so far ... I'm underwhelmed. I know I have A LOT more tweaking to do, so I'll reserve any harsh judgment.
For the record, HT is a hobby and if there isn't tweaking and adjustments to be done and everything worked as advertised .. then my hobby would be watching movies and the only forum that we would be posting in would be the movie reviews! 
> Network connected right away. Did a search and said I was at the latest FW version. Upgrade says connection failed; however it isn't available, so no big deal. Played internet radio (why??) and installed Elgato EyeConnect and was able to stream iTunes without issues. If you are looking for this function, this product worked great (only on Mac). It maintained my iTunes structure and gave me access to my playlists. I have AppleTV, so don't see any use for networking at the moment other than upgrades.
> The GUI is soooo much better than the 2807. Although Denon still manages to make it a little confusing .. but not too far off the 2807.
> The remotes really stink .. not only are they just horribly designed ... they feel cheap and the IR is horrible. My Harmony pones them in all regards. Although a little confusing, the 2807 had a better remote.
> Sad to buy a new receiver with more features and it weighs 1lb less .. can't avoid the 'china' effect no matter where you go (I know some higher tier models are produced in Japan still, but it wasn't in the budget).
Next, these aren't gripes .. just things I'm working through.
> I ran the full up Audyssey process (all 6 points) and it crosses my L/R at 250Hz which seems high since they are B&W N804s.
>It also always finds my L front out of phase which is not the case. My 2807 doesn't have this same error and I did a 1-for-1 swap (yes, I reverified everything twice).
> So far I haven't been able to get it anywhere close to my 2807 in 2 channel music. So much so I refuse to think they took this much of a step backwards. I know its in the EQing but like I said .. I have more hobby-ing to do.
> After all the praise from most, I'm not sold on Dynamic EQ. Its too dramatic. I have a fairly well laid out HT and it just seems like a little much (over compensating). I know there are some other level settings so I will fiddle some more. Maybe its all related to my EQ issues.
As I said, still some issue ... but so far it does most of what it advertises. I bought from Dakmart and wanted a 2809, but they couldn't get them in stock. Settled on the 3310 knowing the differences. Dakmart shipped quick and the unit looks brand new. Plan on getting an Emotiva XPA-3 for the front 3 channels as the B&W's are hungry.
riverst - Try putting a AppleTV sized rip on your ipod and you will see better results for video. You are trying to play a video that is 10% of HD and although the scalar is good .. it isn't that good. My ATV rips are about 2G in size, but are respectable at 110" (maybe DVD but not BDP quality).