1. Padded handles and a throttle lock to reduce hand strain.
2. A twist-lock bagging tube with a spring-loaded release that won't come loose.
3. Metal impellers, sharper and more durable than typical plastic ones.
4. Vacuum tubes you can attach and take off without needing a tool.
5. An easy-start engine like this one, whose cord takes 30 percent less force to yank it to life than previous models.