Randomization of stubs and maintaining the order across multiple questions. XML edit mode is one of the best features. And the responsiveness of the support team is one of the best things one would love Decipher.

We can use phyton for scripting which is very powerful language. Also spss file loading

From programming point of view - it is well suited for programming of complex survey logic and allows for customization of the survey designs. Very convenient and user-friendly interface in terms of daily progress monitoring, allows the report to be split in multiple ways which is very convenient.