Is there a difference between Dragon Ball Z, Dragon Ball Kai and Dragon Ball Z Kai?


After doing a little research, I saw that Dragon Ball Z Kai and Dragon Ball
Kai are the same and that they are just remakes of Dragon Ball Z. Is this
correct?

I know that Dragon Ball Z has around 300 episodes and that Dragon Ball Z Kai
and Dragon Ball Kai stop after the stage with cell around 100 episodes. So
which one is better for watching with an English dub?




Since there can't​ be one particular answer to this question and others can
only give you their opinions, I will say Dragon Ball Z original is much better
than Kai and I liked the old voices more than the new ones in the dub version.

The other thing is Dragon Ball Z Kai does not have any fillers. I have watched
both, and I even thought that losing all the fillers would be a great thing,
but I mostly found it frustrating. Some of Gohan's more awesome rage moments
were shortened and worse yet the battles just were not as exciting.

