Updates to drivers usually only fix minor glitches in the driver. Having the latest and greatest driver is not always necessary. I'd follow the old maxim: If it ain't broke, don't fix it. And, never install a driver under beta test.
If you want to pay for the service, give this a read...http://www.pcdriverupdate.com/
EDIT: I agree with aford10 about the third party driver managers, but I provided the link so you could make up your own mind.