I have been reading here allot and getting closer to making a purchase on one. I like the P2v+ because of all in one solution but I like the idea of being able to upgrade the camera as better ones comes out and you cant do that with the P2V+ so now looking at a P2 with a gopro. But my question is this, are the 2 core phantom's the same or is there a difference between the 2 core models? I am still on the fence about which way to go...