I'm looking hard at the T570 (I've got a T450s docked at work, but 14" is too small for working on the go). It sucks that Lenovo's screens are such crap. Even /r/Thinkpad complains about Lenovo shipping cheap crappy screens.
I also use an HP ProBook G2 450. This is another awesome machine where the screen is subpar. On the Lenovo I an not bothered by it. But the probook unplugged is annoying.