this is going to sound awful what with the statistics and information everyone else seems to have, but when i was deciding it really did come down to gut feeling. Cambridge was always my ultimate (i used to look at pictures of the university buildings when i was younger and read about the colleges -sad i know) so when i got my resullts and was making my university choices there really wasn't much deliberation, i knew where i had my heart set on and i think you will too :] Even if its a slight leaning one way, i would go with it, because you'll always wonder what if if you choose a university based on reasons like 'its more likely i will get in.' If you really can't choose i would visit both, you'll know whether its right for you when you get there :] good luck!