Jep, not bad
I would add: Z800 is maybe not produced anymore... however the price raised dramatically : from around 500$ at the lowest level to 1500$ again...
That 1500$ are more expencive, than TDVisor, but afaik TDV has no headtracking integrated - but might be gotten as additional tool.
You didn't mention resolution:
VR920 has 640x480 native, but can scale down from 1024 or 800x600
It also has its own driver, which is not bad, but does not support as many games as IZ3D driver. Iz3D wants to implement VR920 support in their driver...
Z800 has 800x600 resolution native. Higher quality but also higher price and less support. Not shure, if it will be easy to implement and if IZ3D will implement that as a driver support...
Play Nations at WAR with this code to get 5.000$ as a Starterbonus:
AMD x2 4200+ 2gb Dualchannel
GF 7900gs for old CRT with Elsa Revelator SG's
currently 94.24 Forceware and 94.24 Stereo with XP sp2!