Anyone considering a Lenovo needs to research the Superfish fiasco that's been going on.  Lenovo is NOT to be trusted.

What Lenovo did was far worse than simple adware or crapware insertion. The company didn't just add programs that slowed down your PC or encouraged you to buy antivirus software: Lenovo's Superfish adware hacked into HTTPS security within every web browser installed on an affected machine so that it could inject adware into even supposedly secure web sessions.

This isn't a bug, or a risk. What Lenovo did was deliberate. They didn't fail to find or fix an exploit. They intentionally created one. The company isn't the victim of hackers. They're the perpetrators of a hack.