Thank you for your answer.
I do have the rev2 board, powered by an original Samsung Galaxy S4 power adapter (2A).
The D-Link DWA-160 (A2, AR9170) does start but stutters and hangs the Pi quickly when loaded.
CC&C WL-6210-V3 (RTL8192DU) doesn't even have support in OpenELEC...
TP-Link TL-WN821N (V3, AR7010) works but 2,4GHz wifi is quite unpleasant in crowded areas.