IMO Prime Video is a lot nicer than Netflix. Prime typically has almost any combination of audio/subtitle languages that I want. Netflix typically has only North American languages (English,Spanish,French), and usually only as /either/ subtitles /or/ a new audio track. I'm working on my Polish (because my wife is Polish) and my wife is working on her Spanish (because she's studying it as a hobby) and we frequently watch Prime shows with Polish "lektor" (it's not dubbing, just a guy interpreting the characters' English, which you can still hear) and Spanish audio, or vice versa. On Netflix we can usually find Spanish subs or Spanish dubs -- rarely both, and Polish anything even more rarely (even for shows that are natively in Polish!).