The String Thing doesn't straighten strings well enough for me to use. After stringing, I'm pretty particular about straightening, and I wish The String Thing would get them straight enough. Even though it straightens them out a bit, I still need to use my fingers to get them to a degree that I'm comfortable with. If I need to use my fingers anyway, I just do the whole process with my fingers after taking the racquet off the machine. On a side note, I find it funny in the video when the guy talks about how players shouldn't use string savers anymore like Sampras did. Seems there is a guy by the name of Federer that uses them on every racquet.