I don`t like DBZ.
BUT I used to like it, and as such I also watched DB and DBGT. So here`s my comparative oppinion:
DragonBall is a great anime, and an even better manga. Really funny, great battle scenes and a unique set of characters.
Dragonball Z loses all the humor that was a constant presence in Dragonball. Still, the battle scenes are as good as they were in Dragonball, although they get too repetitive in the Buu saga. I really disliked the Buu saga because it dumped too many new and not-so-interesting elements into the story (like what`s-his-name from hell and the allmighty Great Daioh, the fusion earrings and Vegeta marrying Bulma). Out of the two, I prefer DB.
Dragonball GT was just an attempt to suck more money out of the fans. That doesn`t mean it`s not good. The battles are awful and I can`t take Vegeta`s stache seriously but Goku as a child is just great. It`s a little aftertaste of the original DB sagas. Still, the lack of thrilling battles makes me prefer a rerun of Dragonball.
Wrapping it up, Dragonball is, in my oppinion, the best of the three, Dragonball Z comes in second and GT is just a little bit of nostalgia.
I apologize to the fans for having written any names wrong, but I haven`t watched a single episode in over a year and the written translations of the names in English are just wrong. (nowhere else is Freeza`s name written Frieza, because Frieza is a stupid name).
And, better safe than sorry, don`t be offended by my oppinion.

I`m one out of six billion people in the planet and my oppinion shouldn``t matter that much to you
