A cool up-and-coming quadcopter is the IRIS+ from 3DRobotics . It has a lot of cool and innovative features like a "follow me" function, where you just set the drone to follow you perfectly as you move. Perfect for actions sports, like skiing, or mountain biking. It is priced slightly lower than the DJI Phantom.
If you want a beginner drone, and do not want to spend much, I can recommend you check out the Parrot AR Drone 2.0. A bit cheaper, but still loads of fun to fly around on. It does come with a decent camera, while not GoPro quality, still good enough for the beginner or someone who wants to learn more about drones but do not want to spend too much.
In my opinion the best drone 2015 is still the DJI Phantom 2. There are several new competitors on the market, but the DJI Phantom still sets the standard.
I have not yet had the chance to play with the Ghost Drone, but it looks promising, and I think it can be a challenger, if not this year, maybe next.
But 2015 has just begun, and lots of time remain to see what other companies are showing off their new quadcopters. GoPro will launch their own line of drones, but I do not know what date that will happen yet.
