Peronally, I've had fun going through the single player of Crimson Skies (though I admit I used cheats when it got difficult). The multiplayer is fun.
I usually have a rule that I don't pay more than $29.99 for a game (I usually wait until the price drops) but this one intrigued me when it went on sale for $37.99 a few weeks ago and I don't regret making the purchase.
It's not a true flight-sim, of course. It's easy to learn, hard to "master" which is the way I like it.
