This sounds great. I love my ATV. My friends got us one with a 250GB HD w/ patchstick for our wedding, and my wife and I agree that it is the wedding gift we use the most.
In terms of DVR. I don't think that it needs it. Most cable boxes can be equipped with DVR, and I would rather have it incorporated with the cable hardware (as it is recording from the TV, just saves hassle, extra equipment).
One of my biggest complaints with the ATV as it stands is the syncing. I don't like having to keep the movies in 2 different places if I am using itunes. Fortunately, I don't have to worry, since i just use AFP and put them on the ATV myself.