My personal opinion is that you'd be better off building one. You learn more and you become more familiar with your craft. If something is wrong, there's a better chance of you knowing what is wrong and how to fix it. Plus, you'll get more bang for your buck. I was able to build a 500 sized quad for around $250 including radio, spare props, extra batteries, charger, etc.
Buy a Hubsan X4 or Blade Nano QX or something along those lines to practice flying with while you plan out your build, acquire parts, and work through the build. You may not need that with the heli experience, but that's my standard word of advice.![]()
Thanks I will check out that link.If you want to put a little more into the brain you could always built your own frame. I just built a quad for around ~$525 USD total FPV and a couple replacement parts. I could only put a KK2.5.2 in it to have enough for some other things. one thing for sure though that I failed at it to make sure you get the best out of your money on shipping I wasted a lot by shipping mutiple times from the same seller. I should have bought as much as possible at once.
Take a look at this link, it has a big list of flight controllers and their capabilities / prices. I would suggest Mutiwii for a good price and the ability to RTH.
Also take a look at the Citrus all in one