There's a good half a dozen competitors to P2. They all look good... on paper...
Some of them even work well in reality. But it's very hit or miss. I got one of these clones, see what a great deal I got for $260 and 6 weeks of waiting for shipping from China:
[youtube]https://www.youtube.com/watch?v=lxp414vdc04[/youtube]
If you fly it by itself or with a cheapie Mobius, maybe it's worth it. But if you're going to put a $200 gimbal, $400 gopro, $250 FPV, and whatever else on it, there is one thing that Phantom gives you in heaps: predictability and reliability. You know what to expect.