I have a Life Fitness Elliptical x9i. This is an excellent high quality piece of equipment and works perfectly. It is gym quality and can hold up to 300 lbs. It is very stable and solid. Life Fitness is a world class gym equipment company. This equipment allows automatic programming or manual programming of assorted workouts including calorie burn, fat burn, and heart zone training, etc. It is a very smooth stepping equipment with a heart zone monitor (internal and external) to monitor heart rate. We have loved this equipment but have no place for it when we move.