I have this game and I can say one thing for sure. It is the most realistic ATC simulation on the market. That's why it might seem boring for some people because it is definately not a game, it's simulation all the way. That said, I never was able to get the voice recognition to work, and typing all the comands is sometimes tough when you're handling lots of planes.
So if you want the most realistic ATC simulation available, buy it. If you want a game, get something else.
Oh one more thing... my version didn't run under XP
, there might be an update for that now but i haven't checked in a long time.