Oh, there's entire forums dedicated to differing opinions of the various dubs of Dragon Ball and Z. I for one started with the Canadian dub that ran in the mid to late 90's in the US.
The voice actors were so good, but the dub was terrible. The Texas Funimation dub wasn't any better. I never could really appreciate the voice actors on the Funi dub. I think my bias is similar to the classical music community; how the first recording you hear of a certain piece of music will often be your favorite, unless you find one that is immensely better.

I've wanted to rewatch the show in japanese, but have never gotten around to it. I got burned out on DBZ pretty early in life, because we kept getting the shaft for episodes. I mean, we made it all the way until the Namek saga, and then boom, we stopped getting episodes for a while, and eventually got a new cast. I was also really mad that the ocean group didn't dub the rest of the Namek saga, and you've got a good gap of missing episodes.

I've been hearing news of the Ocean Group's own version of DBZ Kai, but it's been a few years, and I'm not hearing anything promising. Supposedly it's still on.