I recommend Outpost. 
 ***** 
 I still love you, Fade. Even if you're broken. :( 
 "He saved me too." So many times, and in ways I couldn't describe, as if I've been dying of a wound I didn't know I'd taken." So. The romance that was lacking in Enclave? It's all here. Unfortunately, the action scenes were only half of the first book. =( Oh, well. At least I got a big fix of FADE. *dreamy* 
 Love sounded so terrible if it made you weak, you couldn't survive without it. If I didn't read the acknowledgements page in the end, I would've been ignorant that the Freaks are not zombies. Yeah. I was sad about that. But the evolution of the Freaks here in Outpost did not coincide with what I know of zombies. So maybe, my assumption is incorrect in the first place. 
 I like Deuce here. She was clear on what she wants to do as part of Salvation. She was upfront to Fade and yeah, Stalker too. And she was still as bad*ss as before in dismembering the Freaks with her knives. Yeah! I liked that Aguirre did not waste time in dangling the romance chip. The relationship issues were dealt with right away, and with brutal honesty, in order to pave the way of developing the characters more.Until then, I hadn't realized I was so much like my own knives, sharp edged, cold, and perfect for keeping people at a distance. I admit the post-apocalyptic world Aguirre created is still vague as it was in Enclave. The expectation I have in sequels were not met again. Obviously, I want to know more how Deuce's world came as Downside, Topside, and Salvation. 
 This Razorland installment can be categorized as a "dystopian" romance, but I think that is a disservice. This was how I want Rebel Heart to have become."If I ever win you," he said, anger bright in his pale eyes, "it will be because you want me more. Not because he's gone. I'm nobody's second best." - I love this line. Guess who said that? ;) 
 Outpost is more of a character-driven plot. This time, I didn't mind that. I want FADE until now.