The set-up function so has its pitfalls, I usually use the steep landscape that works well, the shallower position does not hold, since slipping the tablet out of the furrow.
In portrait mode is only the flat position, with the steep falls back on the tablet.
The two versions that work well for me and keep fit perfectly.
I have the color quietschgrün and like them very much - a real eye-catcher!
All in all I give a buy recommendation, since the price-quality ratio is quite okay.