I like to stick to drupal for most purposes, but having to conduct many surveys in the near future, I am a bit troubled deciding between Webform and Survey Monkey. Any comments on how webform compares with the following survey monkey paid features?
No Limits - You can create surveys with an unlimited number of questions, spanning an unlimited number of pages. Unlike other services, you are not charged extra for long surveys.
Create Skip Logic (Conditional Logic) - You can customize the path a respondent takes through your survey by adding skip logic. Eliminate unnecessary confusion by skipping non-applicable questions. A proven way to reduce "drop-outs" and overall frustration.
Require Answers - Make sure that you receive a response to essential questions. You can specify on a question by question basis which questions require an answer. Helps to improve the quality of your data.
Randomize Answer Choices - The ordering of choices within a question can introduce an unintended bias. Randomizing answer choices works to eliminate this "order bias".
Add a Logo - Branding your survey gives your survey a professional feel. You can use any logo up to 50K in size at the top of every page in your survey.
Create Custom Themes - Every element of your survey can be customized: fonts, sizes, and colors. After creating your own custom theme, you can apply it to all your future surveys.