Thinking about upgrading your AR.Drone to a more capable quadcopter? Have a look at this informative side-by-side comparison between a Parrot AR.Drone 2.0 and a DJI Phantom. The DJI doesn’t come with a camera but you can use it in combination with a GoPro. The DJI Phantom can be bought for around $450 at the moment of writing. That is excluding the GoPro.
If you want an integrated camera you could go for the more expensive DJI Phantom 2 Vision which has an integrated camcorder but is double the price (~$1.000).