Again, Code Geass was right in that niche where the western industry wasn't sure how to deal with the dubbing processes, they are much better now than they are then. ...But you still find some pretty bad ones(Log Horizon for instance)
Rick and Morty and Futurama. They are both funny (And sometimes inappropriate) and when I watch them I have a good laugh.
It is a toss up for me Sub vs. Dub. Some does I don't want to read a show, and just want to watch and listen. I find myself when it comes to subs reading then missing something, then have to rewind a bit just to watch the anime and see what happened, or I missed some text. Code Geass was a good anime, it got a bit odd toward the end but had a good wrap up.
Hellsing is where it's at, it's dark AF, but it's story and scenes just make up for everything, it's only 10 Episodes and I still can't forgot that show. Srsly, look that stuff up, awesome anime.