Doc Allen Versatool, very good, very capable. There is enough space in the pouch to add a second, 10-bit strip. I do recommend picking up 2" long, 1/4" socket extension, though, as it is less wobbly that way, and you aren't using magnets around hard drives.

I carry that with a fingertip holder, a 6" extension, and few sockets in my bag of tricks every day.

I also carry a couple of the Kronus microtools from Radio Shack. They are made by Commando Products, who hasn't updated thier webpage in two years, at least, and gets nasty if you send them a second information request when they haven't answered the first one in three months, but thier tools are good if you need to work with wee-itty-bitty stuff.