You must have your own thoughts and views about those two institutions, based on what's important to you. All you will get on this site is the subjective (albeit well-meaning) opinions of random, faceless individuals.
You'll need to tell us a little more about your thinking for anyone to give you any meaningful advice, otherwise your question is a little like someone saying "Should I go to France or Spain on holiday?"
well both are good places to be when studying law imo, they're both big commercial law hubs, they're both large, expensive cities. would they be your only options or is there anywhere else you're looking to consider?