SpamTitan has a very organized and attractive web interface. The functions and features of SpamTitan are grouped and sorted logically. Once you have the system setup very little tuning is necessary. Best of all, end-users can manage their own spam-queue and the reporting and logging is a sysadmin's dream.
SpamTitan gives us peace of mind. It gives us central administration of customer's mail filtering. No configuring of Exchange or local antispam solutions required.