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.
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:
"Windows Updates Downloader"
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)