Ok, I'll admit, I'm dog food dumb.

[Thor's Pet]

Hey...
Brief background...I have a 4 month old puppy(He was born Nov 12), he's a papillon/Jack Russell terrier.
Right now he's on Nutrience...as that is what he was on, so I kept him on it.
Now I want to start thinking of what I can switch him to....a healthier brand. Altho a few co-workers of mine say Nutrience is good for him, good for puppies in general.
So it's confusing...I have my mom saying Puppy Chow, coworkers saying keep him on nutrience...and my bf saying it's all the same...and the pet store by my place(they sell just the supplies, not pets) saying their brands are best...like taste of the wild(lady's number one choice), and a few others...
So ya...for a small breed puppy, what would you guys recommend??
I also suspect he could possibly have a weak stomach, as just giving him puppy chow chewy treats makes his stool soft..but not runny, just uhhhh gouey for lack of better word...(I give him the treats to train him to his pads...and cause he likes them).
So I guess I'll ask as well...what are good treats for a small breed puppy?

Sorry if I sound super dumb here...but the last time I dealt with/was responsible for a puppy was nearly 16 yrs ago(My mom's dog Trixie who is a lhasa apso/poodle will be 16 in sept).
Angie