Well, I've watched over 150 episodes in the Japanese, and all of the current English Eps..12 or whatever they are on.
Seeing as how I've watched 150 episodes of Japanese, those voices are stuck in my head, so the English voices seem weird and unfitting, but personaly I think they somewhat are, regardless of watching the Japanese.
I mean, they are trying their best, but I still don't think it's all that great, but that of course is just my opinion.
I am glad they kept the term Jutsu, as well as Hokage, and the Genin, Chuunin, Jounin ranks. I'm also glad they kept the original soundtrack of background music, that's always a plus in my book.
While they're doing a good job, there are just somethings I think they can do better about.
Now, as the series as a whole, I think it's a great series. Definatly not the best series ever, but it's definatly a good series none the less, the animation is great, as far as TV Anime is conserned, but be warned, there are some episodes that are animated horribly, but that's because a bunch of different animation companies animate the series so it gets produced faster. The storyline is pretty solid, as well as the characters.
Overall, I think Naruto is a great series. ^^