Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
COMPUTER: LENOVO THINKPAD X230
When I was a CIO, I bought a lot of Mac hardware but found it frustrating to maintain, and AppleCare could take weeks to get a repair back to you. With Lenovo, you call up and a technician shows up the next day, anywhere in the world. I once had a computer fixed on my hotel-room desk in Mumbai. Even better, you can remove the laptop's hard drive by unscrewing one screw. When I dumped coffee onto my ThinkPad, I bought another and put in my old drive. A minute later, the computer booted without a problem.
OPERATING SYSTEM: UBUNTU
I use Ubuntu ( ubuntu.com ), a free operating system. Because the code is open to scrutiny to all, security vulnerabilities are rooted out quickly. And there's no question of there being any hidden back doors for the NSA.