73.00, 76.44 or 77.13. All of them have their strenghts in different games.
If you like 3DMark, the 77.13 is your choice.

If you like gaming at max speed, it is too. The 77.13 eliminates sound problems that occured in WoW or Doom³ (etc.) by some Audigy/6800 users (including me). But the 73.00 does this either -- 76.44 still has this bug.
Greetings from Germany,
Raff