>>13939>>13935I second that, got a after-leasing nearly mint one for less than $150. It's portable, somewhat durable (in comparison to X230 I guess), has a good keyboard and nice processing power. Buy an extended battery though, the flat one probably is like kicking dead whales down the beach . Use a lightweight distro as well, with WiFi turned off you can get ~7h on battery.
I heard good things about T420, but I need portability, so here you go.