Just recently i've discovered my love for flight sims - I bought Flight Simulator X and i'm even now participating in Microsoft Flight beta, I have bought IL-2 Cliffs of Dover and tried Janes Advanced Strike Fighters. The thing i've found with Flight Sim X and Microsoft Flight is, although a great experience - once you're in the air its horribly boring. IL-2 Cliffs of Dover seems to struggle on graphics even though I have a beast of a machine and Janes Advanced Strike Fighters doesn't even work properly with my joystick. Lately i've also been playing Battlefield 3 only for the jets so I can get my fix for dog fighting - even though of course it isn't realistic, its a hell of a lot of fun.
So my question to the PC Gaming Master Race is this - What is a really good Flight Sim that allows me to have dogfights, works with a joystick and has decent graphics? (and won't run horribly because it is unoptimized).