Don't just focus on what university is better for Law, focus on what university is better for YOU.
I went to a good university for Law, but it just wasn't right for me and put me off doing Law all together. I'd say you'll be better off finding somewhere that's right for you, that you will be comfortable with. Don't worry about the league tables and reputation so much, obviously still include it as a factor, but what's more important is whether you'll like it and you'll enjoy your time there.