As a (very happy) boosted rider as of July, I'm a little concerned about the "single" model. I've blown through three belts already, and find that it's usually

As a (very happy) boosted rider as of July, I'm a little concerned about the "single" model. I've blown through three belts already, and find that it's usually while breaking that a belt will fail. Having two is safe and redundant, but having only one is a double whammy since you double the breaking force on that single belt while also relying on it entirely.