which driver update utility

[x509]

I have seven systems in my home LAN, no two alike, combination of self-built desktops and purchased laptops from two different vendors, mixture of Win 7 Pro 64 and Win XP. I'm looking for a driver update utility that covers both OS's, is reasonably complete and accurate, with reasonable pricing.

Any recommendations? Warnings (to avoid )?

Thanks.

[Falkoner]

Driverpack Solution(drp.su), it's free, and will install for both. IMO it's also by-far the simplest setup of any of them. Device Doctor is a pretty solid free solution as well, assuming they all have internet connections.

Edited January 29, 2013 by Falkoner