Pros: No Gas and all that entails
Cons: Must be diligent! It misses the high stuff.
I made this commitment for my heart and the planet and I feel great every time I use it. The 20" wide blades mean less passes than other, more narrow push-mowers. BUT... you must not let the grass get to high as this pulls the grass in and severs it like scissors, as opposed to hacking it off via the sheer (no pun intended) speed of a horizontal "reaper" type of gas-powered mower (almost all that's out there now).
I love this and what it is doing for my children's future. 0 emissions and I can sharpen and fix and adjust as needed. AND I can start on the weekend without bothering the neighbors.