I find it funny what some people consider to be unstable . I have one of these to FPV through the house with and it is very stable . Most of these little cheap quads are great .
Eachine E010S 65mm Micro FPV Racing Quadcopter with 800TVL CMOS Based On F3 Brush Flight Controller
I found that to be the case too with the little X5C I ordered. I sent it back because there was a defect with it losing connection with as little as 10 feet. But it was SUPER stable .. which was awesome.