I am a big fan of super-power stuff, and I expected the girls in the show to be super-heroes. I watched Warrior Nun after watching Project Power, so I thought it might be as good as the former. However, I found Ava's character annoying. Similar to what other people have said in their reviews, I found her character inconsistent. One minute she's training, next she's running, next, she's trying to find herself in a science lab yet her questions could be properly answered in a church (coz they are the ones who know how the halo works anyway).
I gave this three stars because I liked the fighting and JC with Ava were cute together (despite their personal confusion). I didn't add the two stars because of Ava's inconsistency. Also, the plot was a bit too stretched. If it doesn't have a sequel, then Ava should have started acting right at episode 5 or so. And if Ava chose to run away because she did not choose the halo, she might have given it back as well, coz people who have the halo have a job to do.