Lenovo ThinkPad x230 is durable and better machine. Processor speed is pretty good. Battry duration is very good and this is the main reason why I love this one.
Lenovo is reliable name in laptops deal. For our mega project by Unicef I used it and found it very comfortable in many aspects. For exaple
It is easy to port anywhere.
It is better for those countries who have issues with electricity supplies and facing load sheddings
Battery storage is pretty good.
Keyboard is durable.
Hard drive amount is enough.
The price is somehow hard and it looks expensive, but the perfarmance may make you relax.