This is really only answerable by the person, but from what I have heard about Apple and Google living halfway between both HQs in the Valley, I would lean towa

This is really only answerable by the person, but from what I have heard about Apple and Google living halfway between both HQs in the Valley, I would lean towards Google. They generally pay better from what I can tell, and seem to have more respect for software. Apple also is not as friendly towards supporting employee efforts in open source from what I understand as well. I have heard some talk about unhealthy work-life balance at Apple as well, although that appears to be a mixed bag (true for some, not others) - from what I know about my friends at both employers, it feels like more work longer at Apple than Google. YMMV may vary of course, and these anecdotes may not necessarily even apply to your friend.