which one you use is up to you , and how grunty your pc is , i run realflight g3 updated(photo realistic ) with an overkill pc that has among other stuff a pro 3d video card ..

its as real as you could get with turbulance drift , and slope soaring etc

, however i could easily see running realflight g3 on a pentium 2 for eg ,
i can see how it would be a joke ...not enough power to crunch all that math that goes into flying ...

a 1000$ video card is NOTHING to how much you will spend on this hobby if you seriously want to fly good...


depends what level you want to get in at ...

look around and get what you are happy with and what your pc will run with

Jason