It's a good game, but the flight models are what I call "Light". They're very detailed, such as having the ability to change fuel mixtures, but the feel of flight is like you're on the moon. Added to that, the sense of speed is too high. It feels like you're in a jet, even in a Hurricane. The cockpits look like they're made of cardboard, but they're historically accurate.
Graphics and sound effects seem to be the top priorities in Il-2.