Agreed with what danhimself said 1000%. The XSeries biggest flaw was the artwork IMO. Great story and covers but the interiors fell short on delivering the whole package. Kingdom Come on the other hand was the real deal total experience. Both fantastic. Gonna actually re-read universe and paradise x now......
Earth X is good, but Kingdom Come is AMAZING. Kingdom Come is one of my all-time favorite comic book stories. Earth X is an entertaining read.
If you've never read Earth X, I'd recommend not reading all three parts of the trilogy. There are definitely diminishing returns with Universe X and Paradise X.
In summation, Kingdom Come = superb, Earth X = good, Universe X = okay, Paradise X = no.
@billy_batson: I looked that up and I can't seem to figure out where that starts mind cluing me in?