Which browser is the best

Actually Opera is getting me the best experience.
Free VPN (that actually works);
News;
Fast search...
 
This is just from my personal experience

Chrome
Pros: Nice google integration ability (obviously), a stupid high amount of addons and extensions; lots of customization, downloads are managed well, decent HTML 5 integration.
Cons: Eats up ram faster than a fat kid eats cake at a birthday party.

Firefox
Pros: Good amount of customization, good built in security features
Cons: Some compatibility issues with certain machines, eats ram (just not as bad as chrome), can sometimes have trouble with HTML 5
 
Im currently using a tweaked version of Firefox. It uses low resources and is pretty fast, to me.