This article here may be relevant.

They seem to think the Topeak Mini20 Pro is the best overall choice, but their criteria might not be everyone's.

I've recently replaced my chunky $5 Chinese multitool with a Crank Brothers M10. The latter is a bit more svelte and shouldn't get in its own way as often. Covers all the screws on my current bike from what I can tell and it matches the Red/Black color scheme I've got going on to boot!

I think the Blackburn Tradesman might be a future tool for the next bike I add in to the stable; lots of tools and it has integral stowage for a set of quick-links - which is neat..