I just bought a Thinkpad x220, slightly dated but for $450 a great price/performance ratio when Lenovo was clearing out their refurbs. While I've had it for about a week, the build quality of this machine is simply great. I've seen, and been given from corporate IT, their $4-500 new laptops and for the price they're good but they aren't perfect. Lenovo's top end series like the X are quality machines.