The culture and the “vibe” at these schools are very different. Consider your basic intuition about differences between being on either coast, between the older Northeast “elites” and the newer mid-Atlantic, between the Episcopalian and the Quaker. 100% boarding is very different from near 50/50. 30-40% international is different from 10-15%. My son had very distinct perceptions from visiting St. Andrew’s and George. He could see himself fitting in at the one and not the other. That’s part of how lists get made.
Also, use social media and school publications to find an authoritative voice (say the Headmaster’s) and a student voice (school newspaper, for instance) if you want to begin to appreciate the differences from afar, before deciding which to visit. Some posters here on CC are familiar with multiple schools, but lots with just one; the posts here and private messaging can go into depth about what you find elsewhere.