Any Il-2 players tried War Thunder? It's from Gaijin Entertainment who did Wings of Prey/Birds of Prey, and eventually aiming to be a rival to World of Tanks/Warplanes/Warships, but it's just planes at the moment. I've whipped up a quick beginner's guide (A Beginner's Guide to War Thunder), more aimed at getting completely new players into PvP Arcade battles, but the game also has Realistic and Simulator modes for more hardcore players, and missions and campaigns against AI as well as PvP. Seems pretty good to me, so far.