Thinkpad x220 or t420s. You can get a USB3 port on the i5 t420s, but the battery life is generally shit.
x220, you need to get an i7 to get a usb3, but the battery life is great, and it's small, and you can upgrade to 16gb ram.
Stick with thinkpad. the 20 series is the last series to offer the classic keyboard. After that, e.g., x230, t430s, you get chiclet keys.
x61, x201, x220. Stick with those. I'd go with x220, but you could even get an x61, and put 8gb of ram in it...it's ddr2 though, so it will be expensive.
On the contrary, in the medieval period, there was no notion of copyright whatsoever. The Order of Preachers, otherwise known as the Dominicans, would convene every year and openly share all of the technological advances they had made with the rest of the order, who would then return to their priories and implement the more effective agricultural/technological practices
Basically, if we really were brains in vats, then "we are brains in vats" couldn't ever be true, because the referents of our discourse wouldn't have any causal connection to real brains and real vats, and so it wouldn't even be possible, if one were a brain in a vat, to think the thought or propound the proposition "I am a brain in a vat", and so, it's necessarily false that we are brains in vats.
http://www.thinkwiki.org/wiki/Category:X220
"Three USB ports (of which one is USB 3.0 on the i7 model)"
I would check and make sure that you got one with an i7.