Vista Default Drivers or Latest Available Drivers ?

Since this is a beta test, should I just accept the Vista drivers for my
motherboard devices and my video card or should I attempt to force Vista to
try to accept the latest drivers released by the hardware or chipset
manufacturers? My computer works with the default Vista drivers but I only
have 2 channel sound and I don't have many options to adjust my nvidia video
card. Should I try to run the VIA unified drivers and install the latest
Nvidia driver or accept the Vista defaults. I know I can get a BSOD when I
install and attempt to roll back or remove some of these drivers but is that
a fair test of a beta operating system?