I cut my teeth in the Altiris world with Deployment Server and it still is my preferred way of managing the workstations in our environment. I like the speed and the instant feedback. Today, though, I encountered a situation that made me glad I had NS in my toolkit.
We needed to add an internal web site to the list of trusted sites. You can do this through a registry entry but the entry is to HKEY_Current_User. In DS there was no way that I could think of to touch this key but in NS I just set the job to run for all users of the machine and voila problem solved.