Yeah like everyone said above. Its just personal preference really. Nitro helis are usually MUCH quieter than an RC Car racing up and down your street or a RC Plane for that matter. If you have the money, go for a .50 size heli. Bigger the size - the more stable it will be but downside is cost. Even a .90 will be better but it comes down to how much you want to spend and whether u want electric or nitro.

Electric, I would recommend a Trex.