This is totally depends on you which browser is best for you.
The most common three browsers are Internet Explorer 9, Firefox and Google Chrome.
Internet Explorer 9 : A best well integrated browser in windows 7. Fast and the GUI feels like chrome. I love the pin sites function offered by IE 9
Firefox : Another browser. If you love add-ons like me
then give Firefox a try. Thousands of add-ons, themes make Firefox a customizable browser. Yes it sometimes eats too much RAM
, but it still beats IE 9 and chrome in terms of addons.
Chrome : What to say about this browser! It is a extremely lightweight browser with awesome lighting speed
. This is my favorite browser!
The above opinions are my personal. Feel free to choose among this three browsers which suits you best!