Yeshiva College (and Stern) have higher academic standards and higher tuition, and are designed to integrate Torah with their academics. Touro is primarily a way for frum kids to get a degree without too many problems, with lower standards and tuition. It also depends on what one plans to major in, and whether one wants a profession that requires a graduate degree, or a certain level of accreditation.
Public universities are cheaper but there are more problems especially if you don’t like associating with goyim. It shoulde be noted that public and private universities tend to be liberal with financial aid for large families. Another option is online (there are several places with full accreditation).