Even though tablets don't necessarily make great digital still and video cameras, one shouldn't discount the iPad Air's capabilities. The 5MP rear camera takes great still pictures, even if pictures in dark situations look grainy. The 1080p video clips taken with the iPad AIR are quite impressive and they shine without much shakiness. The 1.2MP front-facing still camera is also decent and has the capability of shooting impressive 720p videos.
The one major addition to the latest iPad is the stereo speaker set. There isn't much noise separation, but you can definitely detect different channels and the sound is generally richer with more bass. You won't be getting rid of your portable Bluetooth speaker anytime soon, but the sound of the iPad AIR is definitely quite impressive.
A minor problem with the iPad 3 and iPad 4 was battery life. These units ran out of gas after 5 or 6 hours of very heavy use. We need to test the battery life on the iPad AIR a little more, but can definitely say it is a little better than the previous mentioned iPads. We don't feel like we need to take the iPad plug with us everywhere. This is especially impressive since the iPad AIR is thinner and runs a faster processor than the previous iPads.
Should you buy an iPad AIR if you own a previous iPad? We would have to say you definitely should at least consider it. You should definitely purchase an iPad AIR if you are new to the tablet market. There are other impressive tablets out there, but none combine all the capabilities and coolness of the iPad AIR.