Netflix and Crunchyroll have both released data confirming that more viewers watch dubs than subs. Even on Crunchyroll, which only serious anime fans are gonna subscribe to, sub viewers are still in the minority.

If the goal is to pick something you can convince your non-anime watching friends to try out, there's gotta be as little friction as possible. Subs will be a turn-off for a lot of people, that's for nerds.