My favorite by far is the camera. I just use superior auto mode and am able to take the most amazing pictures in a wide variety of lighting conditions (even inside darkened bars with no flash). I have completely stopped using my point and shoot camera. I also love the ability to take multiple pictures while holding down the shutter button. I use that at sporting events or situations where there is fast action to get the perfect shot. The 120 fps video mode is another favorite of mine and I have several really great videos that incorporate slow motion now. I thought that was going to be gimmicky and I would tire of it, but it's amazing how many video situations are improved by it.
There are many other features I love, but so far camera is my fav.