My purposes is for very low budget productions to add in a little bit of basic aerial shots to include into videos I do at the moment, such as weddings, real estate videos, and the odd corporate shoot (and for the various no budget things I do now and then such as films and music videos).

My short list would be (with the CX20 looking like my favourite):

http://www.banggood.com/Cheerson-CX20-Opensource-Version-AutoPathfinder-Quadcopter-RTF-p-932145.html http://www.banggood.com/WLtoys-V666-5_8G-FPV-6-Axis-RC-Quadcopter-With-HD-Camera-Monitor-RTF-p-944001.html http://www.banggood.com/Flying-3D-X8-6-Axis-2_4G-8CH-GPS-FPV-RC-Quadcopter-RTF-p-934779.html http://www.dx.com/p/walkera-qr-x350-5-ch-one-key-go-home-r-c-quadcopter-w-gps-altitude-hold-system-bnf-white-245208#.VOVf-NgcSuA http://www.dx.com/p/wltoys-v303-2-4g-4-ch-r-c-aircraft-w-gps-automatic-return-camera-suitable-for-gopro-hero3-3-330169#.VOVgCdgcSuA

All can carry a GoPro on them. (though the second one, the cheapest, requires some modding I think, and does stretch the lift capacity to the limits)

FPV + Gimbal for the GoPro would both be "nice to haves" as well.

Though both things that can be purchased later on to add to the quadcopter, and not right now.

Anything else I'm missing or should be considering, please point out! :-)