This little helicopter is my first co-axial helicopter. I bought the Walkera with metal rotor head and the 2.4G transmitter. It’s a bit more expensive than the standard Walkera with plastic rotor head and normal 35 or 72 MHz transmitter. The Walkera 5G6 is the same size as the Walkera 4#3. The only difference is that the Walkera 5G6 have two counter rotating main rotor blades, and no tail rotor. Compared to the Walkera 4#3, the Walkera 5G6 weighs 53g, slightly heavier due to the extra main motor.
As I said in my Walkera 4#3 review, Walkera’s designing engineers have done it again to put a superb little helicopter (the Walkera 5G6) out there for everyone to enjoy.