I chose Survey Legend because it gives you the option to add images to your survey, for free!
Especially when you ask lots of questions in your questionnaire, answering it might become a burden for your respondents. Thanks to Survey Legend, the respondents said that it was a 'funny, pleasant to look at' questionnaire, as opposed to the respondents to my paper version, who found the same questionnaire without images on paper 'time consuming' and 'hard to get through'.
I really like how you can customize the look of your questionnaire, and also that it's not hard to do so. The platform is really intuitive and I would recommend it to anyone, even people who struggle using computers.
Take it from someone who has had lots of issues with online survey tools: thanks to Survey Legend I will never go back to paper questionnaires. It's easy to use, it looks amazing, and respondents are happy to answer.
Also, the customer service is great. They reply instantly and are really kind and helpful!