I had to create a quick online survey last week for a retrospective. I used Zoomerang and loved the ease of use such online survey tools offer (I dislike typical enterprise offerings in this space. They are bulky, complicated, slow and self-service is next to impossible for business-users).
I had one issue using a free account though. Survey creation and launch only took 10 minutes, whereas data export took 45 mins! (export wasn't available for a free account, so I had to manually export data into a spreadsheet).
In the future, I plan to use Google forms instead.