Sunny Health & Fitness is behind plenty of decent exercise machines for indoor training. Their Elite Interactive Magnetic Smart Exercise Bike is also worth a look. It comes with Bluetooth connectivity and combines with the SunnyFit app to measure your performance in real-time. The app has over 100 workout videos for you to try.
The Sunny Health & Fitness Elite Upright Bike has a 9lb flywheel. It has a 3-inch thick padded seat. It has a convenient smartphone holder and heart pulse sensing grips.