What are the differences between recurve-style crossbows and compound crossbows?

Recurve-style crossbows allow for easier string changes and are inherently wider. Compound crossbows require slightly more effort to service but are more compact in design, deliver more energy per inch of power stroke and are up to 15% more efficient. Cocking is typically easier due to the shorter overall length as well as the built-in "let off" in draw weight, making it less critical to cock evenly due to the working characteristics of the wheels.