do you want to use an Hosted Solution or host it on your own Server?
If you are looking for an hosted Solution you should try:
http://www.surveygizmo.com/ or http://www.zoomerang.com/.
Or if you want to host it on your own you should try LimeSurvey (http://www.limesurvey.com/). We are using it since few Years and are very happy with it, especially since you can highly customize it and it has a great Templating Engine.
SurveyMonkey is a very useful online survey tool widely used by academics. Basic functionality is free, but you pay a small subscription if you want more features.
SoGoSurvey is great if you are looking for a very user-friendly interface.
Especially for students this option is smart, as it offers a Free Annual Student License. This provides students with the same features offered within the paid option, which are relevant for the successful conduction of empirical research, such as advanced question types, anonymous surveys, etc. In order to get a license there are a few easy criteria to fulfil: You register with your student account, leave a comment on Facebook and like SoGoSurvey’s page, write an article about SoGoSurvey with a link pointing to their website, post the article on an online forum and finally email your request to SoGoSurvey’s Support Team. Exact information concerning the free student plan can be found on their website.
Even if you are not a student you can take a look at the many advantages SoGoSurvey has to offer compared to other survey tools at http://www.sogosurvey.com/.
I am using SoGoSurvey as it is very user friendly and has the option of multiple languages. Therefore it provides all the services I need for my master thesis. Additionally the customer service is very good and all my questions were answered immediately.