Merrick or Nature's Logic Dry? Or something else?

Hi!

So both of my cats are currently on 100% wet, and they're doing fine on it. I'd like to add a tiny  bit of dry food into their diet. So they'd maybe be like 95% wet, 5% dry. I just want to leave a little bit out to snack on while I'm at work, so I won't feel like a terrible person if I don't make it home immediately after work. Plus, it'd be nice to go out of town for a night without having to worry about lining someone up to work the can opener. They're also both a little underweight so I'm not worried about them gaining at the moment. It'd actually be nice if they both gained a pound.

Anyway, I've narrowed it down to these two - I'd love to her from someone that's used them: 
Merrick Limited Ingredient Diet Grain-Free Real Turkey Recipe Dry Cat Food
Nature's Logic Feline Turkey Meal Feast Dry Cat Food​
 

They seem to like Turkey flavored anything, so I'm hoping one of these will work. They both rejected Wellness Core dry food. 

Feel free to suggest your favorite dry as well. I'm open to most anything grain free. 

If it helps, for wet food they're on a mix of Dave's & Wellness brand canned food. Strictly pate. 

PS. Anyone know if Chewy will take open returns if their Majesties reject this? Thanks!!

BUMP

Or would something like Fromm or Orijen be better? I'm not super concerned about cost since it's going to be such a small part of their diet. I'd like to get as high quality as I can. 

I use Orijen cat & kitten. I've used it for years and my cats are happy with it. They don't eat it exclusively but as a snack. Orijen makes sample bags you can usually buy at local pet stores so you don't have to buy a big bag if they don't like it.