I've noticed a trade-off in survey and e-sign tools.
What I really want is a Ballot tool. (Something that surveys and has a good paper signature feel)
So far I've found:
Any feedback would be great!
I've used Helios Voting and found it to be pretty good.
We used this for an informal group of privacy advocates to drive a campaign across Twitter earlier this year and it was easy and effective.
I don't know what you mean with paper trail and signature; but limesurvey is fantastic. I use it for my daytime profits.
there is even a hostet solution - but install you own is free (if you have a server that can handle the load and you can customize the shit out of it, if you want).