I have a Macbook Pro. It came installed with Snow Leopard 10.6.8. It seems to run fine, though I have been tempted to upgrade to new OSX's in the past. I really dislike the newer two dimensional flat appearance of the dock bar. That is actually a major reason for not upgrading. However, for several months websites have locked me out because my browser is not updated. It was last updated in Nov. 2014 to version 5.1.10. Apparently I can't update any more unless I purchase an upgrade to Snow Leopard (which will probably only update my browser), or upgrade to a newer OSX. Besides my "appearance" issues with the dock, should I just jump into the latest greatest OSZ (el capitan), or pay to update snow leopard?