What do you like best?
+ very intuitive, easy to setup surveys (unlike tools like Usabilla)
+ all targeting and customization options we need are available
+ great customer service
What do you dislike?
I've used this tool for 3 different companies now. I haven't encountered any limitations yet.
Recommendations to others considering the product
Don't think about it too much. Just give it a go for a month and you'll most likely see you like it.
What business problems are you solving with the product? What benefits have you realized?
Conversion optimization: Understanding which real issues website visitors have to convert (lack of understanding, objections, functional problems, feedback on value proposition).
It helps to AB test the right things.