Quarq Elsa 10R
The draw: Fully capable, easy to use
For a significant price bump from the Stages unit (reviewed at right), the Elsa 10R records the entire picture of energy output, not just one leg. Factor in the cost of the right arm needed to complete the Stages system and the difference becomes minor. Features like an easy-to-change battery and optional short crankarms make this power meter universally appealing for triathletes. For those who train on more than one bike, swapping this crank becomes simple with just a little practice.