I once said that it is better to have no voice-acting at all, than have less than excellent voice-acting.
There is no middle ground here, it is either excellent, or if it can't be, the feature should be expunged so as not to degrade the whole game.
I don't know if you agree with this sentiment, but this has certainly been my experience in many years of gaming.
That being said, has the overall quality in this market been improved over the recent years? Are there any specific resources you would recommend?