It is difficult to definitively answer the question of which indoor cycling trainer is better, Wahoo or Tacx. Both brands offer a variety of models with different features and capabilities that may suit different cyclists' needs.
Wahoo trainers are known for their reliability and accuracy in measuring power output, while Tacx trainers have been praised for their quiet operation and ease of use.
Additionally, both companies offer interactive training software that allows users to customize workouts based on their individual goals. Ultimately, it will come down to personal preference, as each cyclist has unique requirements when selecting an indoor cycling trainer.