Spyderco: Delica ffg, caly 3, the whole sage series, techno, dragonfly, leafstorm, chaparral.
Benchmade: mini griptilian, Doug Ritter mini grip (Ritter Mini RSK-1), small bone collector, 707 sequel, 705 if you can find one.
Kershaw: Leek (any variation but particularly the g10/s30v), cryo.
Of all of the knives I've listed I can speak highest of the benchmade 707, spyderco sage or caly3 if you want an upscale feel. And the benchmade Ritter mini grip or the spyderco delica ffg (in zdp-189 if you can swing it) if you don't mind frn handle scales and want to save a couple bucks.