Ok, I have to admit I was a bit skeptical because nobody left a review here. But I gave it a try and I am very impressed by

1.) the look&feel of the UIX
2.) the level of maternity in terms of statistics and features
3.) integrations are easy and flawless (will test cname the next days)

To make things short: I will be using this in a large scale international research project. We are already using a classic survey tool but I will adapt the survey in Chat survey and I'm really looking forward to the results. My first pretest among other scientists showed that they were quite impressed, and we want to check if the participants get more involved with this layout.

Sure it doesn't have the variety in methods like limesurvey or other platforms but you are doing the hardcore statistics in SPSS or R+ anyway.