I flew QR on JNB to DOH to CAI and the Wifi was incredible. Really, exactly how it should be. Lufthansa is usually ok reliable but slow. I have not had a single BA flight this year (out of about 20) where the WiFi was reliable. Sometimes it worked for parts of the flight but it frustrates me every time now. All my last 2 BA LGW-FAO flights supposedly had WiFi and would allow me to log in but had zero internet connectivity. I annoy myself every time I even try to access it and it fails.