I recently completed a video comparison on 4 small fixed blade knives. I am still rocking the hideaway straight as my EDC knife but started to look around at some other options as well. The awesome custom fit of the HAK is also it's only real weakness, if you are wearing gloves you pretty much can't use the knife.
The four knives are the TOPS M1 Sub Compact, Boker Fred Perrin Neck Bowie, Tops FDX Hunter Point, and the Esee Izula. The main common feature between these, besides small size, is a deep(ish, depending on blade) finger choil.