Oldfart, asking me about which driver is best is like asking which home theatre receiver is best to someone who grew up on two channel stereo in the 70s. However, just like those complex new receivers, driver design has become much more complicated as due to the complexity of both the games and the hardware.
The general consensus seems to be that the 7041 were a major step forward for most people with a few major effects that were corrected 7062. 7062 seemed to introduce some side effects that mainly affected the video functionality of the AIW product only.
Rest assured the holy grail driver does exists...usually it is found in a device called N64, Playstation, or Dreamcast where the fixed hardware rules and game applications and "drivers" can be load down simultaneously. The problem in PC land is that the hardware is so varied that even something as simple as USB takes a few iterations to iron out the operating system, OEM driver and the hardware. It is a fact of life but graphics card companies even have to co-operate with non standard chipset protocol issues that cannot be worked around by a driver short of disabling performance. AGP 4X anyone ?