The type of job you're doing is the true determiner of whether a gas or electric tiller is better for you. Electric models are almost always smaller and are perfect for working in smaller garden spaces. They also weigh less, take up less storage space and tend to be more affordable. Gas tillers usually pack more power and are ideal for larger gardens or those with very challenging soil types. Expect to pay more for a gas model, and be sure to dedicate a fair amount of space for storage over the off-season.