Then scratch the Revue Starlight and Symphogear suggestions, because Revue's dub isn't very good and Symphogear doesn't have a dub. Here are some other recommendations, all of which (IMO) are at least pretty good anime with pretty good dubs:
A Certain Magical Index (and its spin-off, A Certain Scientific Railgun) Black Lagoon BOFURI: I Don't Want to Get Hurt, so I'll Max Out My Defense D-Frag! Deca-Dence Endro~! Flip Flappers Gurren Lagann Heavy Object Little Witch Academia My Next Life As A Villainess Nichijou Pop Team Epic Princess Principal Puella Magi Madoka Magica (and its spin-off, Magia Record) Zombie Land Saga
Villainess is on Crunchyroll and VRV, Flip Flappers and Princess Principal are on HiDive and VRV, Little Witch is on Netflix, and Funimation has the rest.
KFHEWUI posted...
Betterman Cromartie High School Beck Mongolian Chop Squad Mononoke Silent Mobius Big O IGPX Last Exile (do not watch the crappy sequel) Trigun Ergo Proxy Uzaki-Chan Wants to Hang Out G Gundam Dead Leaves Redline Shinesman Azumanga Diaoh
I've seen all bolder and gintama too I'll have a look at the others