RC Electric Helicopters come in all sizes, from micro helicopters to the largest RC helicopters available.
Electric helicopters have come a LONG way in the last few years. I believe it is true to say that electric helicopters are the most popular of all the types of remote controlled helicopters available today.
Reasons for the popularity of electric helicopters -
Performance wise the electric helicopter is at least equal to any other power source of the modern RC helicopter. Compared to Gas or Nitro RC helicopters, they are very simple to operate and require the minimum of field support equipment.
To day's Li-Po batteries give ample flight time and the batteries are easy to exchange, so it is quite practical to spend the whole day at the flying field.
The modern Micro Helicopters are amazing technological choppers that would be impossible to have with any other power units. Electric is the only way to go for these miniature marvels! Their popularity means they can be mass produced and thus the price can be very competitive.
One tip I can pass on is to stay away from the electric helicopters that use a separate motor for the tail rotor. Apparently the response time is slower than the type that uses a belt or shaft drive from the main gearbox.
A phenomenon known as "tail blowout" can occur where it is difficult to keep the heli from rotating about the main axis.
All in all, it is easy to see why electric helicopters are so popular today-maybe the most popular category in the whole field of RC airplanes!
The answer to this question may very well be the Blade 200 SR X RTF with SAFE® technology.
SAFE® technology is a system of gyros that stabilize the flight pattern and allow different control throws to be switch accessed, as the beginner advances in flying abilities.
It also includes a "Panic" switch which can be very useful when the pilot finds him or her self in a "frightening" flight position.
When actuated, the built in stabilization gyros are activated and the helicopter returns to a normal. upright hover attitude.
This is a fixed pitch machine which is simpler but not as maneuverable as a collective pitch heli.
Note that the RTF letters in the name refer to the fact that this is a Ready To Fly helicopter and includes everything to fly. (Including an RC transmitter). You do not need to buy anything else except maybe a spare battery to enable you to fly whilst a battery is being charged.
This is an excellent video made by the manufacturer (Horizon Hobby) and shows the superb flying qualities.
If a fully aerobatic helicopter is your target then why not start out with a collective pitch machine that is easy to fly?
Now Blade's SAFE® technology is applied to a collective pitch, flybar less heli and a beginner can learn to fly with it!
The Blade 230S RTF is absolutely complete and nothing else is required to fly.
The "Panic" switch of the SAFE® sytem can save a chopper that is in a "lost "flight position and return it to safe, upright flight.
The 3 flight modes mean you can engage in more demanding flight patterns as your confidence grows.
The best idea may be to start out with the 200 SRX described above and make the 230 S your second machine and use it as an aerobatic trainer.