well I haven't tried it yet I was surprized to find it and yes it is better I think as I read this:
D2X-XL fixes virtually all bugs found in D2X 0.2.6 and adds a plethora of new features. Here are some of the more prominent additions:
* Mouse control working properly, improved and dual joystick support
* Improved support for playing Descent 1 missions
* Fully implemented capture the flag game mode
* Entropy multiplayer game mode similar to the one found in Descent 3
* UDP/IP communication and tracker support
* All cockpit styles available in all screen resolutions
* Colored lighting, cameras and monitors, in-level teleports, speed boosts (wind tunnels)
* Increased number of cubes, walls, triggers and objects
* Support for environment areas (sky boxes)
* Triggers attached to robots
With our V6K's hehe FSAA x8 should look sweet in OpenGL as well there is even Cockpit Modes in all reso's