There are a few things to consider when deciding whether a string or blade edger is better for you. String trimmers are typically less expensive than blade edgers, and they're also more versatile since you can use them for other tasks like trimming weeds and grass around trees and fences. Blade edgers, on the other hand, offer a clean, precise cut that's perfect for creating defined edges along sidewalks and driveways. They can be more difficult to maneuver than string trimmers, however, so it's important to choose one that's comfortable for you to use.