I'm really enjoying this conversation. I've been eyeing these quadcopters lately, but don't know enough about them to make a decision.
You might like to join a local Model Aviation (Remote Control) Flying Club in your area.
This is what I have done.
I decided I would earn my "wings" the old fashion way by joining a club and benefitting from the vast amount of real world experince that the other club members have acumulated. Joining a club also can offer a free insurance with their membership that covers all AMA and MAAC events.
Just got my copy of "Model Aviation Canada" news in, and was reading about the new Phantom (2) Vision Quadcopter. Seems they are actively trying to discourage the use of this quadcopter, as they will not permit the use of this quadcopter at any of their MAAC sanctioned fields. Don't know about AMA field sites.
Seems DJI has seen fit to transmit FPV (First Person Video) signals on 2.4 Ghz WIFI which could have the unintended effect of blanking out everyone else's signals to their aircraft nearby causing unintended crashes for other fliers.
The remote control of this quadcopter is on the 5.8Ghz frequency and can cause interfere or loss of signal with other operators recieving thier FPV signals on the same frequency.
Incidently, the 5.8Ghz frequency is located in the Amateur Radio Band here in Canada, and I suspect it is the same in the United States. This means you need an Amateur Radio Operators License to operate any 5.8Ghz equipment.
MAAC seems to be quite upset about this quadcopter and are even talking about forming campaign to educate store owners and sellers about the possible consequences of operating these particular quadcopters around other model aviation pilots.
Sorry to muddy the waters, but I think anyone thinking of flying a quadcopter should ally themselves with a local model aircraft flying club to get the best experience they can.