Poll, survey, questionnaire - what is the best extras?

What is the best extras for creating surveys in MODX? I installed Poll (Polls - MODX Extras | MODX Documentation) but there was a problem during installation (I am using MODX 3.0.3), I assume that the Poll extras is not ready for this version of MODX. What proven extras do you know for creating polls?

I made a simple survey with formit and saved the results to the db.
With migx you can create your own survey result design.