Which CMS is better for implement web survey system on website - Drupal or Wordpress? Any plugin suggestion?
Drupal is best for this. Try this form building module of drupal for your web servey system project : http://www.lullabot.com/blog/drupals-form-building-future
Well, now I'm figure out which is better... I tried and tested with both. But better aproach I found for Drupal. Wordpress has some plugins but no one works well for me. And on the other hand Drupal has some Forms modules which you can use for nice Web Survey building... ..so I choose Drupal