I think the dub for shippuuden was done well, I watched up to about episode 50 in subs when it first came out and stopped but I have now heard all the voices in dub that i heard in sub and they sound really good, they seem to fit the characters fairly well with a few exceptions. The translations on it are also good, though some parts are a bit different and lose some of their meaning is lost it is still good. (sorry if some of this makes no sense, I am a bit tired :S)