The new voices are far superior and the cutting of scenes? It's the removal of filler unless you like cutting to Bulma and Chi Chi in the middle of Goku and Frieza's fight.

The voices suck, I much prefer the original ones, or at least the voices used by the end of DBZ since I imagine some of the characters had different voice actors part way through. Also I just watched the video and the lines have been changed in places like when the android head got destroyed the lines from the android and cell had been changed.