well, i improved my version, so here is my first "real" entry:




(light setting was a bit different on the 2nd shot)

advantages in this logo:
- fully 3d, shot can be created from any angle; every colour, light etc. can be redefined to the needs
- alpha channel, so this logo is not bound to its background
- uses only a greyscale pallette (meets 8bit requirement)
- simple, yet modern design, easy to keep in mind

[edit] dark version