I am a UCSD student pick, Muir
My major is Neurobiology, Muir has the Biology, Math, and Physics department so a lot of the classes for those subjects are there.
Muir is the perfect distance from everything (10 minutes from about everywhere on campus)
Sixth is getting a new building in like two years, so that’s cool.
I’m lazy but Warren and Sixth are downhill which would make going to class so tiring.
You also might not get into Muir cause its the hardest college to get into on campus, (make it your first choice), but most students regret not picking Muir.