When he said "I'll finish this" it sounded badass.
I hate he has the same voice as Tobi, but it's possible Tobi could do the voice changer that Yamato did to sound like Sasori back in the beginning of Shippuden.
I hope they change his voice in the future, but overall, I like it.
P.S. No one cares if you like Japanese voice. At least.. I don't.