I'm about 4 or 5 chapters into Allegiant (Divergent book 3), and so far I'm not digging it as much as the first two. I'm invested in the story and everything, but the dual-protagonist perspective is not working for me. Don't get me wrong, I love the idea of dual-protagonist perspectives and initially thought it was a nice change of pace (in Allegiant, the two POVs are Tris and Tobias), but the Tobias chapters have been limp. Veronica Roth, so far at least, cannot write a male character effectively. Tobias' chapters, so far, read kinda girly/emo-kid and too much like Tris's. Tobias is supposed to be a tough guy and I don't read any tough guy machismo in his chapters so far. I get it that thick-skinned tough guys often have traumatic pasts that made them thick-skinned in the first place and hitting that hot button can be emotional, but tough guys don't turn into dishrags and still carry themselves with bravado in the face of adversity.
I hope Tobias's chapters improve, or at the very least have a different voice. Right now, I have to keep referring back to the beginning of each chapter to remember who's narrating. Not good at all.
This could lend well to a classic literary discussion. The idea of how well authors write characters of opposite genders. It's easy to make blanket statements that one can't effectively write the other, but that would be false. For example, we know George RR Martin writes female characters exceptionally well. Ask anyone who their favorite A Song of Ice and Fire character is, and they'll likely mention one of the ladies, because they're awesome. And in Gone With the Wind, Margaret Mitchell penned Rhett Butler. You can't ask for a more "man's man" than Rhett Butler. When he delivers his classic line at the end of the movie, it's pretty badass. It's manly, ya know? EDIT: And though I haven't read Suzanne Collins' Hunger Games trilogy yet, I've been told that Peeta (the boy) is a more compellingly written character than Katniss (the girl).