I like that it provides me with all of my required data to make informed decisions about software selection, implementation issues etc., as well as providing support for ongoing maintenance activities once an application is implemented; however there are many other tools available now which can provide similar information but in more user friendly ways so this tool may not be necessary anymore - especially given its high cost (and lacklustre customer service).
The ease by which we were able to track our projects/sprints over multiple locations across India using one interface was also very impressive! It has been extremely helpful at keeping us organised when working remotely from different states throughout India. We have used TeamViewer extensively since implementing VersionOne several years ago due to time zone differences between team members located around various parts of Asia including China & Japan where V1 would normally fail during use within these.