Firefox gets my vote here and has done so for the last 4 years at least.

Sorry, but Internet Explorer has gone from practically 100% market share to being a huge big FAIL. Microsoft started losing its way many years ago, but was too arrogant to see this and far too slow to improve its browser. Hence, its now losing market share big time.


Firefox + Adblock Plus add-on + British English Dictionary add-on is what I'd suggest to everyone.