MacBook Pro 7,1 OS X upgrade to Lion or Mavericks I own a MacBook Pro 7,1 running Snow Leopard 10.6.8 and need to upgrade my operating system in order to allow my kids access Netflix as it says I need to update my browser.

Apple software update says I have latest available software.

Can I download Lion or Mavericks from anywhere?

As I don't really want to risk going to Yosemite in case it renders my MacBook Pro useless.
OS X Yosemite runs amazingly on my 2009 MacBook Pro (5,3). I don't know who started all this nonsense about Yosemite running poorly on all Macs, but it's perfectly safe and very useful on new Macs and even ones like mine that are a few years old.