I EDC the Spyderco Salt II, which is based on the Endura. It's about $10 US more because of the H-1 steel, which is billed as being toally rust free. It's light but sturdy, the big thumbhole makes it easy to open, and the modified sheepsfoot blade makes it look less "aggressive". It's a very functional blade shape, though - ask any blue water sailor.

I also have a Spyderco Ladybug on my keyring, so I guess that's my second EDC.