MS Vista vs Xgl Linux ( my vote for the linux world )

After see Xgl it in action in a real box I can't belive it, a frined run it on an Athlon 64 3000+ with an Nvidia Fx5200 the Linux performance is OUTSTANDING !!!! and check out all that effects, the 3D interface add a lot of usability to virtual desktops... I don't like Vista too much, I think that is too much over design and that promise more things that it really deliver =)