Yea, E-flite makes ok planes to start out with. I knew a guy who had a Parkzone Habu and it was pretty fast. Parkzone makes good planes too. I had one of their Mustang P51-D’s and crashed the crap out of it and would just glue it back together and keep flying. Plus you can buy new bodies for cheap if it gets to the point where it is so full of glue it won’t fly right anymore which is the problem I ended up having with my Mustang. The Spektrum DX6i would probably be better as if you want to get into heli’s then you have a 6 channel capable radio already. You could even surf ebay and pick up a used radio for cheap. I have a Futaba 6EX and it works for me. It doesn’t have all the features I would like but it works. The Spektrum radios would probably be better though as like I said, a lot of planes come B-N-F with a Spektrum receiver(rx) so you can bind it straight to your controller. Also, you can program different profiles for more than one plane on them. The profiles remember the trims and settings so you don’t have to change the trim every time you change planes if you get into it like that. Another thing to look into is a flying wing. I have one and it is fun to fly. Plus you can make them fast and they are made out of foam and easy to repair.
As for 3D, it is just doing stunts like in the video. You can do rolling harriers, hover, knife edge, waterfalls, and much more. They are just so fun but you have to get used to flying first. Another thing I suggest getting is a RC simulator to practice on. It will save you from having to fix stuff all the time lol. If you go to Hobby King, you can get a simulator for $15-$25. I have the one that works with my radio and it came with a DVD that had a few different older simulator programs on it like RealFlight G5 and PheonixRC. Hobby King also has lipo batteries for really cheap. I have a bunch of the 3S 2200mah packs. They also have nice chargers for cheap. I have a Hobby King Quattro 4x6 that can individually charge 4 packs at a time. But yea, let me know if there is anything else you need to know or anything. I haven’t flown in about 6 months or so but still have all my stuff. I need to get a job so I can afford all my hobbies lol.