Specifically their computer science degrees. I know Sussex is considered academically superior, but is Brighton really much worse? What are some pros and cons? Any insight would be much appreciated.
Brighton is an ex-polytechnic (only became a university in 1992] ) and most of those are still looked down on somewhat, though a few have done really well in the rankings. Can’t speak to CS specifically. There is a UK specific site, the student room (TSR), where you’re likely to get more detailed info than this US-aimed forum.