I use it, and have used it for around 7 years now.
Pros: It has limited capability to read enroute notam restrictions and can adjust your route/altitude. Has a few bells and whistles (notam decoder, waypoint database, etc). Has the ability to auto-uplink weather updates (taf, metar, sigmet) over acars to your aircraft on its own. It is a great flight planning system if you only have one or two flights (see below), but no so much it you're planning and following 23 or so international flights with etops crossings, Russian tracks, 5 fleet types, etc. For domestic it beats a whiz wheel and pencil.
Cons: It is a single-task system that only allows you to perform one function at a time (flight following OR flight planning). It is designed for europeans by europeans and not for 121 domestic/flag rules. The calulations are in metric figures and converted back over to standard with questionable accuracy. It is maintained by arrogant germans who seem far more interested in caring for the needs of customers like Air Pakistan than UPS. It was sold to us with all kinds of features that never materialized, such as the ability to interface with CFMU.
In the end it is an adequate system, but in my opinion it is not even remotely close to being worth the cost. There are far worse out there, and there are far better out there as well. For international dispatching I prefer Navtech, which also has its cons...namely my old boss working there now.:bandit: