Our company looked into this product a while back, but there were some issues with drive mappings that hindered our ability to use this product. We recently decided to take another look. Visual Cron has since made changes for "Foreground Execution" that allowed us to run all our scripts with network drive mappings as needed. The support that we recieved also helped us to make this decision.
Our current implemtation allows multiple users to launch build processes on our build computer from remote locations. This was a big deal for us, since it allows our developers to review code changes in the way they affect our installers. Our nightly build is run completely by means of Visual Cron, and it works great.