The SquatMax-MD is built like a tank! The concept is so simple, that is what makes it so great. At 64, I have decided to quit performing barbell squats. Therefore, I needed something that would hit the quads and glutes like squats and boy do they. Plus, there is no strain on my upper back, traps, and shoulders. You can simply just concentrate on the movement and can go deeper! Love the seat also, you can adjust to the depth you wish to go. What a pump! Even my beautiful 70-year-old wife is using the machine. This will always be a staple in my gym. Cannot wait for Titan to release the attachments.