The x250 has great battery life. The keyboard is a little better than the X240, but not as good as the X220 or even the X230. Some of the keys are not full size

The x250 has great battery life. The keyboard is a little better than the X240, but not as good as the X220 or even the X230. Some of the keys are not full size. The function keys are garbage by default, but there's a persistent Fn lock (might be a BIOS setting, don't recall). Performance wise it's very nice. Screen is decent, too. My only complaint is the that the keyboard has a bunch of non-full size keys. End and Insert are on a single key. Someone should be shot for that.