I have 2 K8's and an EV sub that kicks serious a** when I need it.
Most times, I just take the Bose Compact ..... I only need more headroom if people are going to speak loudly, shout, sing, whatever or I really need to thump serious bass for a large dance crowd.
Bass and vocals eat up headroom in an instant, so it's nice to have more than enough when you're in a large situation.