Personally I use it not for a laptop, but as a support keyboard / wireless mouse, to be well ensconced in my sofa and indulge in my favorite activity, the video game!
The feet are adjustable in height, all is stable, the plate is varnished and the Wireless Optical Mouse glides smoothly over.
Not yet used as a carrier for breakfast in bed but I do not think it will put particular worries ;-)
In short for the price / quality ratio, gives me all the comfort I wished basking