DS1 has about 10 friends who are at Oxford or Cambridge. They are quite a mixed bag as mostly from his grammar school sixth form. What they have in common is being extremely intelligent. One did 6 A levels, maths, FM, 3 sciences and also Japanese just for fun! Another got 5 x A* for his A levels. Lovely young people, not at all arrogant, but there were those in his sixth form who weren't quite as nice.
I think I have a bit of inverted snobbery going on in my mind about Oxbridge. It's a great opportunity and you'd have that kudos for life. They're the only internationally well known universities in UK, rather like Manchester United is for football. You'd make amazing connections. But... I just don't like them. 
Anyway, can I show off a bit? DS1 just got his second year uni results for maths at Warwick. He got a first.
It's only worth 30% of his degree but his first year was 10% as well so only 60% to go. Happy house here!