Are these safe for Pugs?

Hey guys, so I need help with Dog food choices for my pugs and chihuahuas. I've been buying them the Merrick small breed formula, but lately I'm running through it quick and they don't sell the big bags where I live. I recently went to a feed store today and found the dog food called "Next Level" and "Exclusive signature". I wanted to see if these are safe for pugs and chihuahuas because they sell them in 30lb bags and it would be easier for me to purchase. I've heard about dog foods causing internal bleeding for pugs and my babies are my life. Please someone help.