User blog comment:AtlasFlame206/Is there gonna be a possible Fairy Tail/Rave Master crossover story arc?/@comment-99.234.126.128-20130822054644/@comment-4829046-20130824112522

To me a good dub is one that's purpose is to allow the English audience to understand what the characters are saying while bringing out the same effect as the original but at the same time keeping some of the core stuff. For example, in many dubs there is a lip-sync problem where the characters seemingly pause after every few words. This is a sign of bad dubbing. Also the lack Japanese-only stuff, most importantly honorifics and terms unique to Japanese. Some dubs are excellent and keep to the Japanese. They use the honorifics and terms, for instance they add the "chan", "kun", "senpai" and others and also terms like galge, eroge, moe, doujinshi, kanji, ecchi etc.

But on another note, its simply the Voice Actors. Hearing the Japanese VA is also one of the reasons I(and in general other otaku) love anime. \(^_^)/ The character representation cannot be copied no matter how good a dubber is. That's something of a skill unique to an individual. You see in most cases I see the VA rather than the character cause the VA does such a good representation.

Oops it seems Nick already posted =P