always stick with strongly agree or strongly disagree. those systems never take on people who are on the fence on a lot of questions. they're made to decipher your values and where you stand on them. i did hiring for best buy for a while and your application actually comes back either green (good), yellow (on the fence) and red (bad) and i was always told by my manager to filter for green. they only go yellow if the hiring needs are desperate.
fyi, i work at geico now and the questionnaire was killer. -_-