the Spyderco Kiwi is only 2", but it gets my recommendation as well. locks up as solid as any Spydie LB, and looks very elegant. i've never freaked anyone out with mine. runs about 50 bucks after shipping, maybe a little more.
the CRKT Rollock is dirt-cheap at about 20-25 shipped. AUS-6 blade, at 2.25", it's a little closer to the size you want. it's definitely locking, and what a perfect excuse this would be to buy such a unique and fun design, huh?
Spyderco Dragonfly would also be nice, but probably best in SS (i don't care for the integral clip on the FRN model). SS runs about 35 bucks.
i'd probably get the Rollock, just 'cause it looks so fun.
abe m.