WORTH EVERY CENT!!
No particular injury but my knee just didn't feel stable playing Ozztag and going for occasional local runs. It was on the pricey side compared with the usual pharmacy stuff i've tried before but it actually works! Do yourself a favour and pay that little more - you wont look back or need to buy a different one.
Forgot to mention it didn't slip, cut in at all or feel like my knee was about the combust like the usual cheapies with the heat. It just fit and works!