I'm not disagreeing with what you're saying, but the recent dramatic increase in cost in Lockheed Martin's aircraft in particular, compared to other fighters of the world, compared to their own original estimates, and compared what what fighter jets cost in the past, leads me to believe they are no longer an efficiently run company. Obviously I don't really know, but no one in this thread knows to the contrary either. It wasn't too long ago that a cutting edge fighter cost < $50 mil. There hasn't been that much inflation.
Russian jets are more maneuverable and equally fast as American jets at a fraction of the cost. American jets have stealth, but the Su PAK FA will as well. It's also the first aircraft to have pitch, yaw, and roll all controllable via thrust vectoring. At $100 mil US it's not exactly cheap either, but a bargain compared to the F22, which it is designed to compete with.