Well i guess since i really wanna finish the story, the only option is to get used with the "new" voices. I dont have any problem with subbed anime in normal cases. Like i wrote earlier, ive watched several shows in subbed versions but the thing that bothers me is getting used to going from english to japanese in the same series.
I know that the show itself splits anime fans in two groups. Either they love it or they despise it. the show clearly have a few flaws and sometimes lives on the fighting scenes purely. But i enjoy the darkness in the show. the revenge plots, the dark story of some of the characters.
Nagato, Itachi/Sauske for example.