I hear it's sorta like chicken.
...but smells like Fish.
TBH, I like DCS - the free version includes a couple flyable airplanes. It's definately high-fidelity and complex as fruck, (meaning, you need the checklist to start your aircraft and know where the buttons are) or you can simplify the cockpit with an E press to start.
It's not MMO, and finding multiplayer games is well, an experience. It does have dynamic campaign engine based on game input by myself and Mark Sheppard a long time ago when we were working with the design team with Flanker 2, and Lock-On, and then DCS 1, and I just got busy with Aces High and life. Still a good product.