Hello!
I would believe that the colleges you've looked at (John Snow, Josephine Butler and South) are pretty good shouts actually! I can't comment on the social life of any other college but I personally really like the college life at John Snow especially the formals and balls we have however it depends on what you would like to do (such as if there's a specific sport you'd like to do or society)
St Hild & St Bede and Stephensons College are also self-catered and might be worth looking into but I would recommend filtering down based on what each college's JCR has as listed societies/teams. Generally, the college life at all self-catered colleges are about the same so I wouldn't be too worried about that!
Good luck on the open day!
– Lesath (DU Rep.)
P.S. There's a good chance your lectures won't actually be held at the Earth Science site (because lecture rooms are assigned based on class size not building) so I wouldn't necessarily recommend choosing a college near it
