The best features I have found are that it is very customizable, which would be number one, and very extensible through the use of scripts and triggers. The visual look of the interface is very easy to understand what is happening and somewhat why it's happening. It may sound facetious, but it really is everything about it. Everything works exactly the way it's meant to, a dream come true for anyone who's administering systems because it gives you all the information that you want and all the actions you want to take, all in one place. The benefits I have seen from using it so far include the ability to know in advance and take actions based on the information the tool gives you.
