I have never read Universe X or Paradise X in full.
I mentioned this before, but I bought the Universe X Vol. 1 TPB and read the first couple of chapters and ended up returning it, extremely disappointed. Bass convinced me to give it another go and stick with it, and I'm glad I did. It's a chore at first but picks up nicely in the middle.
Neither are as good as Earth X but they are still good in their own rights. I enjoyed it. It's worth trying again.