What you pay
The Peloton Bike is $1,595, the NordicTrack S22i $2,499. Over three years the NordicTrack still lands about $850 cheaper, with a year of iFit and a lower monthly plan.
Incline and build
The S22i adds -10% to +20% incline the Peloton can't, on sturdier components. For varied training that hardware matters.
Classes
The Peloton has the bigger live-class community and the slicker app. It comes down to incline training and lower cost against the class experience.