What sort did you try Thrax, was it using active shutter glasses or polarising ones?
I've used all three and found high end active shutter glasses pretty good (but I couldn't use them for long periods of time), whereas the polarising glasses worked great even for extended periods. High end autostereoscopic monitors are fantastic, but incredibly expensive (if they have active tracking).
The NVIDIA 3D Vision package uses high-speed LCD active shutter glasses, and it requires a 120Hz monitor so each lens/eye can receive a 60Hz image.