About two months ago I decided to go 'old school' with my lawn mower. Rather than pollute the air with my aged mower, rather than smelling like fumes after I'm done, and rather than dragging out the heavy mower every time, I purchased a 7-blade Sunlawn MM2 reel-mower from People Powered Machines.
I've mowed approximately 6 or 7 times since I've gotten it and I have to say it's more work than a powered mower. Although much lighter it's harder to push through heavy grass. It doesn't trim around planting beds as well (can't plant the wheel down in the mulch) and you have to mow over the same area in two different directions to get a good cut.
However, I won't stop using it and I'm still glad I bought it. Although it is more work and it does take a little bit more time to mow, I feel like it's time well spent given its low impact on the environment and I'm healthier for using it.