Now naturally if you're watching airing anime titles as they air from Japan or simulcast onto Crunchyroll or FUNimation then you generally don't have a choice of course.
BUT once they get released onto DVD and Blu-ray, do you generally prefer to watch the English dub or go straight for Japanese audio with subs?
I personally prefer subbed most of the time. Having said that, I do try to get a few opinions to see what people think of a given English dub, then I might listen to a few samples before diving in all the way.
The other option I suppose is you could watch both if you really really love the title.
Some dubbed titles which I think were done REALLY WELL include:
Ghost in the Shell: Stand Alone Complex
Neon Genesis Evangelion (TV series)
Guilty Crown
Black Lagoon
Fullmetal Alchemist Brotherhood
How about you?