Spyderco Dragonfly. I bought a Dragonfly SS serrated a few weeks ago and I love it. The handle has great ergonomics, especially for a small knife. It locks into my slim/large hands very well. The leaf pattern of the blade is very usefull, and the flat grind gives it great cutting ability. As has already been said, the Dragonfly cuts like a larger knife. In a way, it's kind of like a mini Temperance Jr. I've never handled a Mouse, but it seems to be kind of pricey in comparison, probably due to some sort of restrictive pricing policy that keeps the price artificially high.
Also, two knives that I've seen on the Internet are the Al Mar SLB, and a short knife put out by Beretta, the name escapes me right now. They interest me, and might be worth looking at.