QUICK VERDICT
For training, single-sided is accurate enough. For known imbalances or bike fitting, dual-sided justifies the premium. Most amateurs should start single-sided.
CHOOSE SINGLE-SIDED POWER IF
CHOOSE DUAL-SIDED POWER IF
RELATED COMPARISONS
Full article
The long-form piece that backs this comparison.
Contador's Contaminated Steak: The Clenbuterol Case Explained
How McNulty and Vollering Won the Montréal Worlds — and What Club Racers Can Take From It