Hmmm Explain something to me. When you say Funimation vs Kai, are you comparing the DB Kai Japanese and original DBZ Funimation Voice Actors (VAs)? Because if you're comparing English dubs of DBZ and DB Kai, they are both dubbed by Funimation. read more
The original dub will always be legendary, especially, with it's soundtracks and some of it's voice acting but Dragon Ball Z Kai was created to best it, and it's more accurate to the manga. So, Dragon Ball Z Kai dub > Dragon Ball z dub (Original). read more
Kai is a better television series because it moves at a much more reasonable pace, but I have the entire run of Dragon Ball (the original series season sets, all the Z Dragon Box Sets, the GT Seasons, and all movies/OVAs/TV specials) on DVD and I'd much rather watch those than Kai. read more