The ease of use of this device makes it very easy for a surgeon or physician to learn how to operate the machine quickly and effectively. It can be used for many different procedures such as sinus surgery, ear surgeries, nose surgeries, etc. I have not found anything about this product that I dislike. If you are looking for an effective tool for sinus surgery then look no further than the Onkos surgical system. This device allows me to perform all my sinus surgeries with minimal discomfort to my patient.