I do enjoy Take on Helicopters but it is lacking in fights and gets more boring than Microsoft Flight. You can actually add it as an addon to OA ArmaII etc.. anyways.. I am drifting here.. look for the release of Hinds on 3/15/2012
Take on Helicopters doesn't revolutionize the simulator genre but most definitely will go down in gaming history as an interesting experiment. Have the developers focused more on the "simulator" part, the game could gain more recognition among hardcore fans.
The very first flight simulator capable of attracting gamers who always ignored this genre. Two large maps and plenty of missions with detailed models of helicopters make you a fan of flying. [Dec 2011]