try heliguy mate they are top class when it comes to helis also have a great support forum i would reccomend say a http://www.heliguy.com/Nitro-RC-Helicopters/Introduction/ but please remember you can only run nitro helis if your part of a flying club, its illegal to use them in a public place due to the damage they can cause and risk to other people, with a club you get proper insurance in case things go wrong the only other alternative is to buy a blade or a align copter they are good electric helis may not be as powerful in regards to nitro, nitro holds the key to stability and electric holds the key to safe legal flying! Good luck with it all mate let me know how you get on!
Ricky