For me, a clear purchasing decisions.

Perhaps one anticipated. I live in an area where it is recommended according to the internet to have an outdoor antenna for DVB-T reception to enjoy. Since this was not possible, I chose for as an internal thing with 40 dB of gain, 2 antennas of almost 1 m in length and had with this thing tolerable reception - as she stood in front of the window. But then came by the advice of a friend, the One For All SV 9215 into the house.
This small, white, nondescript Ante Nchen the size of an A4 sheet and the thickness of approximately 1 cm (with connector) looks so weak that I did not believe it to get even 1 single transmitter. But - I have connected them and lo and behold ... Brilliant reception. No faults, no coarse pixels if there even a car passes or it rains. The absolute madness. I have now BEHIND the growing wall mounted (our outside wall is 60cm thick!) And still receive all without problems - even in down left external blinds.
On the wall even this cute little thing falls through the white color also not really. In my view, a very strong buy recommendation - especially wenns with standard DVB-T antennas only sporadically works.