looking for a good modern setting flight sim whats out there?

Che Guevara: A rather naive Marxist mass-murderer, who carried out Revolutionary "Justice" in Cuba, normally with a pistol to the temple. Drove Cuba's economy into the ground as its head by having a system where supply and demand did not dictate price, but the "social worth" of the item in question. Relished the idea of a global nuclear war between Socialism and Imperialism/Capitalism, and firmly believed that "The People" would be grateful for such a conflict. After falling out of favour in Cuba, he tried to sell himself as a wandering revolutionary in South America, so determined to "help the people" that he wasn't bothered with trifling little details about who they were and what they wanted (he tried to sell a communist revolution to Bolivian natives, who owned their own land and were perfectly happy and therefore told him to sod off). Ended up getting topped in Bolivia by CIA trained soldiers. Che Guevara is idolised by all kinds of naive students and marxists who are more interested in the myths about the man than what he actually did

The best civilian flight sim IMO is Microsoft Flight Simulator 2004, though this is due to be updated later this year around christmas time. Other people swear by another sim called X-Plane. I like FS2004 cause it is prettier and it is easy to get additional aircraft for it because there is a large community for this game. If you want combat, there is a game called "Lock On: Modern Air Combat" or LOMAC for short. It has things like the F-15, Mig-29, A-10 and some other aircraft. This should be pretty cheap now and I believe you can get it in a package that also includes two other WW2 combat sims called IL/2 or something.

Falcon 4.0 / Falcon 4.0 Allied Force are 2 other really good combat flight sims.

Which one of them is the best?

Fs2004 i'd say, u can Dl scenery, and more planes! :D