I think you and GP are using different definitions of "larger". One definition is "more programs". Another is merely "more students".

Generally, go for the one with the lower student:teacher ratio. My anecdote:

I and a friend both went to low ranked undergrad universities (state schools). Mine, however, had a low student:teacher ratio per class. Comparing notes with him, the main benefit was that professors actually cared about teaching. The number of students wasn't high enough to be a burden. They didn't repeat the same HW and exams every semester. The number of office hours per week per professor was 3-9 hours. They could be that generous because there simply weren't enough students to use up those hours.

We also didn't have TAs teaching any course.

(Also went to a top ranked university for grad school - very few professors cared about teaching).