Here is what I think 

It is taking more time than booting windows vista on a old laptop to attain maximum head speed.
If It was a little bigger, I could sit in it. 
It cannot hover inverted. 
The pilot is real good flyer. 

And you could probably buy a SUV or a House for the price of this.

Seriously!

Lets actually accept it that people are unrealistic overpowering their Jet/Helis that a Typhoon is howering in a charm, only F-35 and later planes could do. 

The kind of power-luxury a R/C builder enjoys, would be a sheer envy to any real plane/Heli designer (team).

The Heli is fantastic and highly detailed not only in cosmetic design but flight characteristic and power.

And Vinay, R/C people are making Fly completly flat wing made of Depron/Coro and inverting even Flying Box/House and what not. hardly 1% or real world helis can do inverted flight, leave alone 3D. Real Heli do take time to reach head speed for lift off as they dont run on EP/Outrunners 

Bow Down to this Heli builder and Pilot!   

And Bow down to the amount he has invested   I am not saying he has done anything wrong or Wasted his money! It all finally boils down to people's personal preferences