Gas and electric models both have their pluses. Gas-powered models will definitely run for long periods of time. They also offer more power. Depending on how thick your grass is, how large your yard is, and whether it’s hilly, a gas-powered model may be a good choice. Electric models (either corded or cordless models) are quieter, they generally take far less maintenance, and you don’t need to keep messy gas cans around. They’re cleaner to operate (no noxious fumes), but running times are limited. If you have a smaller yard (less than a ¼ acre), however, an electric model is worth considering.