You have two objectives with that section: 1) Convince someone they want to interview you before they read the rest of your resume 2) Filter out jobs which ar

You have two objectives with that section: 1) Convince someone they want to interview you before they read the rest of your resume 2) Filter out jobs which aren't a good match for you. For (1) you should highlight the one or two single most important things that will make a company want to hire you and for (2) you should highlight what your key requirements for a job are (do you want a job which involves a lot of travel, management, etc).