Last but definitely not least, we have the computer security issues. Some computers may have built-in options, some may allow you to install all sorts of security programs. It all depends on how sensitive the information you are working on is and how much you need fingerprint recognition, for example.
Choosing the right computer means having the right tools for every task, battery life to make sure you can cover emergency situation and portability. You may have to carry your computer around with you for hours every day or you may need it to open and access files quickly. These are all things you must decide on before and choices you have to live and work with afterwards. So choose wisely.