FSX/P3D. If you are looking for something above FS's default offering and not a fan of FTXGlobal or find it to be a bit expensive, there is an alternative. Honestly, looking at the provided screenshots... looking a bit FS9nish to me. But again, it does really offer a better alternative to default for about 35 bucks. For a full list of features, comparison screenshots and to purchase, click the source link below.