I have a DJI Phantom 1, easy enough to use, it's been reliable and I think relatively cheap. Had mobs of fun with it, I already had a GoPro. I use it to film my camp spots and have filmed the wife on her paddle board. I don't like using it when a bit windy because the video looks a bit unstable but I have just got a gimble for it and will see how that goes. DJI have lots of options and models, mines fairly basic but has as you said GPS etc. When starting out get some prop guards

Look here
www.dji.com/products and here
www.multiwiicopter.com/products/dji-phantom-1-1-1-rtf-drone I see the price has gone up because of the dollar, good chance cheaper elsewhere ?
Google for info, lots of it, even YouTube, this aussie mob has plenty of info