I use Windows Updates, then check each application I use every so often.
I don't use Microsoft to update drivers, and in fact I don't update drivers at all unless I have a specific problem, using the tried and tested formula, "if it isn't broken, don't fix it"
If I want to update drivers I go direct to source.
Mark
In the past few years it seems like a new PC Updater comes on the market every few months. Some of them update drivers, some applications, and some both. I've tried most of them, including:
filehippo
SUMo
Secunia
GetIt
Appupdater
AppGet
AppSnap
"Windows Updates Downloader"
Driver Detective
DriverCure
UpdateStar
InstallPad
Drivermax
Driver Agent
VersionTracker
Uniblue DriverScanner
RadarSync
Windows Update
Which is the best driver and apps updater? I've been playing with these toys several years, testing them out. So far, I've found that I like RadarSync best, because: a) it's FREE (not just the typical free scan, but the actual downloads); b) it's reliable and finds lots of updates; c) it finds driver and apps updates; d) it links to the vendor websites for the downloads, which makes it much more likely that you're getting clean files.
And you? I'm curious to hear which ones other people are using. (and to debate the pros/cons a little)
Cheers,
JD

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic