The T420 keyboard is far better than the chicklet T430s. It’s a proper mechanical keyboard.
I’ve got both, have used both for webdev work, but compared to a modern laptop, the screens suck, the video is underpowered for 4k monitors, and the ssd interface is slow, and the trackpads are awful. On the bright side, trackpoints. (But I’m using a M13 w/ trackpoint so…. ) They’re also heavy and battery life is almost long enough to work the whole way on my bus commute, one way.
I’ve got both, have used both for webdev work, but compared to a modern laptop, the screens suck, the video is underpowered for 4k monitors, and the ssd interface is slow, and the trackpads are awful. On the bright side, trackpoints. (But I’m using a M13 w/ trackpoint so…. ) They’re also heavy and battery life is almost long enough to work the whole way on my bus commute, one way.