The better news is that many of the best are available for free, whether from Apple, as open source projects, or as free/donationware creations of other Mac administrators and IT professionals. The good news is that there are many tried and true solutions for handling common Mac deployment and management tasks. As with many aspects of IT, having the right tool for the job is the key to managing a new or existing population of Apple desktops and notebooks.
Deploying and supporting Macs presents distinct challenges, particularly in organizations where Macs are in the minority or are being introduced for the first time.