Pfft, I love my G25. but there is some pretty serious kit out there. A few examples
Act Labs
http://www.act-labs.com/products/race1.htm
Frex (check out the simcon motion)
http://www.frex.com/gp/
Although Simcon has nothing on this from Force Dynamics
Ok so your average sim racer wont be buying that or the simcon motion but I know a few who by the high end equipment from the likes of Frex.
This is one is acutally pretty cool. Petter and Henning Solberg driving RBR on the Force Dynamics rig. RBR is pretty damn hard and Henning flies through the stages. RBR must get a few things right then