I can't speak for everyone, but 160p is by far the worst looking, and sounding, quality. For those with terrible internet speeds, that's fine, but I'm totally fine with my video 30 seconds behind the streamer over this terrible quality that's coming in regardless of what quality I put it at (as it automatically downgrades to 160p if it can't handle it, heavens forbid we put you 15 seconds behind the streamer). I just want the ability to tell twitch on my side, once and for all, NO 160P QUALITY FOR ME.