The Japanese Kugihiki flush cutting saw saves me time, makes a cleaner cut, and needs no setup time. Since the teeth have no set, you can slide the saw against a surface without marring it.
These and other Japanese hand saws such as Dozuki and Ryoba have caused me to abandon power tools for many jobs. The cut almost never needs cleaning up and is good for many materials. The Ryoba looks intimidating but can replace a cheap circular saw any day for a lot less money.