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For those who love sleek European design, the new Tacx Flux S easily checks off that box. With super-solid construction that sets up easily right out of the box, this Bluetooth and ANT+ FE-C trainer from Netherlands-based Tacx is an all-around contender for under $800. Features like 10-percent grade simulation and a 1,500W ceiling may be slightly lower than more expensive trainers, but for triathletes looking for solid indoor workouts without breaking the bank, the Flux S is a good choice—it’s also one of the most silent trainers in the group. Pair it with Zwift or Sufferfest (the accompanying Tacx app is slightly limited), and this quiet giant is ideal for most indoor setups.