I'm not entirely clear where the line between original dub and funimation dub is drawn. I have the funimation blu rays specifically because they have the 'as originally aired' option, but I don't know what differences there are between funimation original airing and ocean dub original airing, besides voice actors (ocean being the actual original airing in the US). I think it's supposed to be the original funimation dub, then a redub they did with a more accurate script and more seasoned performances?
The original dub on those blu rays isn't strictly bad. It's 100% a product of its time, and at the time a 100% literal translation was never going to be the way to go, especially without the backdrop of original Dragon Ball to frame it. There's a lot about it that's straight better than the japanese, like the weird industry standard insistence on keeping a female voice actor when a character grows up and clearly shouldn't sound that way. Ocean and Funi Gokus are both superior to the original. And on re-watch, a lot of the jokes the dub makes are fucking hilarious. Like, I can see how someone wouldn't like it, but it's far from being objectively bad or anything. It can be its own thing, theres enough room in the fandom for that.
The exception here is that the Faulconer score is better. It has more variety, plays up more moments, fits the sci fi tone of Z way better, duplicates the feel of some of the original songs fairly successfully, and is really only outshone in a couple of spots in the whole series. The only real problem with it is that the first 60 episodes didn't have it originally.