This is the only title in the trilogy that I read; I listened to the others, and that's the way to go. Listening to the romance between Tris and Tobias made me roll my eyes (at best) and cringe (at worst) over the fawning and drama. Reading about them seemed just fine. 
 Most of Allegiant is far less action-filled than the other two titles. Most of the focus is on DNA, which brings up issues of prejudice and lack of free will. Fine qualities in any novel, though I never felt especially moved for one side or the other. 
 Overall, it's a decent (and quick) read, and a fine end to a series. I'm glad I finished them all, but I'm also glad there won't be more. I won't be reading Four A Divergent Story Collection, though fans of the series certainly will.