After a long search for an easy-to-use and fun aerial wargame I think I've finally found it.
Can't wait for a WW2 version (I think one has been proposed, 'AirWar 1940' but seems not to have been developed as yet).
Quick and realistic modern air combat rules.
A friend and I played the "lite" version of AirWar:21. Our observations went into his review on comicbooked.com. The review can be found below:
A very interesting set of Air combat rules for modern conflicts. I will be upgrading to the real thing soon.