The Spydersaw is an excellent saw. I have two and use them mostly on green wood, collecting material for whittling projects, etc. Bigger than the Endura by about an inch, it is based on the Catcherman. Light, flat, and easy to carry as any Spyderco knife; also stainless and low maintenance. For a saw to carry in the pocket, by far the best I have come on yet. But kind of small, the down side of light and easy to carry. Got mine a few years ago for around $33; now that it is discontinued prices have become outrageous (if ebay is any indication).
I like the Spydersaw more than the Silky Pocketboy (the smallest Silky as far as I know), but at todays prices the Pocketboy is probably a better value. I have a Silky Gomboy, which is a larger model, and like both brands.