This machine will blow you away. It removes all of the hassle and space requirements of free weights. It tracks and adjusts your resistance on each exercise, making your workout super efficient. The classes are excellent, and the ability to design your own programs allows you to precisely dial in your perfect workout regimen. Automatic spotting, smart flex, eccentric, and chain are all very useful features, and can only be done properly using Tonal. Way more sophisticated, precise, and much safer than doing negatives with a partner. I use Tonal 3-4 times every week. This is the future of resistance exercise.