I've used a similar machine and I love it! I'm a tad over 6'6" and when doing A2G squats, it's virtually impossible for me to not have my knees travel over my feet. These eliminate that and you can lift waaaay more weight because, I think, psycologically you just feel safe. Plus you can also use it to do standing calf raises. I would say to go for it! Good luck man. Oh how much does this cost? I may be interested in getting one. EDIT: Now that I looked at it again, I don't like how it has that bar that would limit how far down you can go w/it. I think there are better models out there.