If this has been covered before then I am sorry, but better twice than not at all. Iris at http://www.irisfss.com/the-hangar.php are giving away a lot of their older types. There are 16 available, from the P-40 to the F-35 JSF, by way of the Harrier, Hawk, F-5, Eagle, Tomcat and Tornado. The ones I have tried so far are brilliant: the P-40, for instance, covers E, F, L and N models of various air forces with different loads and even a couple of two seaters.
Coming so soon after the Aeroplane Heaven giveaway there really is some good stuff out there.