The only flight sim worth having in my opinion is "IL-2 Sturmovik". Love the patriotic Stalinist music after successful defence of the Motherland from the Fascist hordes. Great RT in Russian. "Got one: he's going to hell!" Beats the stuffing out of Microsoft Combat Flight Sim for flight modelling, looks and difficulty.
PS: another successful mission, and Mladshiy Leitenant Petrovich Pruneski has been awarded the Order of the Red Banner. On the other side, Leutnant Parsifal Von Prune has been shot down by a Yak 3, again.