“Best” for what purpose? To prepare a student to enter a top Ph.D. program? To have a robust, well-rounded undergraduate experience that can translate into any number of career options?
Philosophical Gourmet is a ranking which folks argue about, but it can give you a fair sense of what is going on in departments around the country. The thing is, at a graduate level, programs are highly specialized and tend to excel in particular areas though they will offer courses across the tradition. Rutgers and Pitt excel in certain areas as does UC Riverside – not schools one ordinarily think of as “elite” but they are in terms of graduate study of specific fields in philosophy.
A student applying to undergrad is not likely to know if they want to study metaphysics, ethics, 20th C or something else. And, as a parent, I am well aware that students going into college often revise their plans and change their major once they get into an area of study.
For a well-rounded undergraduate program, most reputable LACs will offer a range of courses over an undergrad’s 4 years, though given how small most LAC philosophy departments are, a course in a particular area may only be taught once or twice over those 4 years.