It is engineered to burn twice the calories of a standard treadmill by using patented movements that engage more leg muscles.

Retails for approximately $13,495 at specialty stores like At Home Fitness . The Best of the Classics (Used/Refurbished): Bowflex TC200 Go to product viewer dialog for this item. The Bowflex TC200

16" HD touchscreen and 22 digital resistance levels.

Max speed of 4.5 mph, designed specifically for intense walking rather than running.

Listed at P.C. Richard & Son for approximately $2,299 . The Commercial Gold Standard: Star Trac E-TCi TreadClimber Go to product viewer dialog for this item.

It features a massive 27" HD touchscreen that swivels 360 degrees for floor workouts. It supports up to 190 steps per minute, making it ideal for HIIT sessions.

provides a similar high-intensity, low-impact vertical workout.

For those seeking the absolute peak of durability and a true "dual ramping deck" design, the is the commercial machine often found in high-end gyms.