I don't think FSX looks bad at all from close distance , with a good global scenery package and individual airports you get also a very good looking textures around the ground level .
Tileproxy video from 2009 :
Created as FREEWARE by Christian Buchner, it's a real-time interface between Microsoft's Flight Simulator X and the Internet. It will download photo-terrain textures from online map services by acting as a proxy server and file format converter. This tool turns your Flight Simulator into an interactive 3D map browser unlike anything you have experienced before.
Some different kind of ground scenery:
and custom scenery airport:
Cheeers ,
S!