Paperless Office Users

I want to go paperless but having had a bad and costly experience of audit software I would like to know (and I'm sure others would to) what the systems are that you experienced users are using and what you think of them. If you could answer the following questions it might be helpful for everyone who's thinking of changing to paperless.

1] no of partners

2] no of staff

3] system used to scan

4] system used to file and retrieve

5] what does it file (hard copies scanned, emials, MS documents, etc)

4] cost of system (roughly)

5] are you happy with it

6] would you recommend it

7] any other thoughts/recommendations .