Create quality tutorial videos for our software product in Camtasia

We would like to create a number of tutorials for our software product. We have made a start on this but require a higher quality of video than we can product in house.

You will need to take an existing videos created in SnagIt and also an audio script and turn these into a quality tutorial. Each tutorial is only about 6 minutes long.

Pls provide examples of similar projects and also your experience with Campasia.