I dont know whether i would consider it Great or Excellent, alot of people think this failed as Gainaxs 20th anniversary release but i disagree...
I enjoyed it alot, it was funny and cheesy to begin with, once you figure out whats going on with all the "i'm a normal boy on a bike, oh would you look at that a naked girl lets tell her i'll be with her forever OMGWTH A MONSTER! Lets instantly change into something freaky and kill it without knowing a thing about whats happening!".
Once you get past the first episode confusion you're alright, fanservice steps in but in a good way (unlike NAJICA! Ewwwwwwww! What crap that was!), anyway, it doesnt go majorly over the top, but theres a good amount of it until near enough the end where everything starts to make more sense and fit together (to some degree), while turning alot more serious than most of the previous episodes.
Give it a go, its worth it :)