with the exception of the Gainward and Radeon all those other cards are workstation cards and aren't all that great for games. The Quadro is decent, but the Matrox and 3DLabs cards are steaming piles when it comes to gaming.
Most 3DLabs cards, esp. the Wildcat series have no vertex or pixel shaders.
You want really pricey card that is a real performer get an Nvidia QuadroFX 3000. The gen-lock version goes for about $2600. We're using the 2000fx's at my lab and they are utter monsters.