Get a good display, whatever you get. Clear, easy-to-read -- for you -- and nice and big, considering what you've got to spend and how much carrying around you need do. The older I get, the bigger a screen I want, so see it in person to make sure the size and resolution work for you in a programming environment.

Coding can be really tedious when ls and 1s and Os and 0s get hard to distinguish, e.g. Not to mention having to frequently tab or switch windows all the time when you really might prefer to see two or more things simultaneously but there isn't the room.