I have an older Spyderco Endura, and it's been a pretty good knife- no real complaints. So much of knife selection is personal preference, and so much has changed on the Endura over the years, that it's hard to say anything definite. They've changed the handle shape, the rocker, the steel, the clip...

The handle is comfortable, and Spyderco knives, with that big, patented circular hole in the blade, open more easily with one hand than almost all thumb-stud folders. The Zytel versions are pretty lightweight, and my Endura balances just behind the blade pivot pin.

If I were buying a Spyderco now, I'd buy the Military, as it's easier to keep clean and has the stronger liner lock, rather than the older rocker-lock design on the Endura. Also, the hollow-ground bevel on the EnduraI makes the point a little more delicate than I like.

I don't much care for serrated edges.

Hope this is of some help.