ive two of the genetrain 92 dollars one.. but if your serious with getting optimal protection i would suggest these. Do the research with these sites to better make the right decision. personally I would spend extra money to protect the knee.
http://www.braceability.com/knee-bra...raps?brand=304
http://www.bauerfeindusa.com/en/home.html
PS. Measure your knee correctly, as the sizes differ greatly