I also suggest pirating it, fansub or something, if possible. The Crunchyroll version (iirc) has fucked up jp audio and is really low resolution.
Same with Gurren Lagann, weirdly. Also the translations are actual ass and actively undermine the energy of it. The famous lines are literally wrong and timed and paced weirdly. Bad subs are like listening to a bad cover of Whitney Houston - you'll get the gist, sort of, but not at all the experience.