I've got dodgy knees from too much marathon running and cycling, so this was really important to me. I've inested in a pair of Platinums from Tradetiler. They're slightly different in that your shin bone takes the strain, so your ankle isn't under any pressure and your knees are essentially floating - so you're not outting your knees under strain or pressure. I don't bother strapping them on - they're a bit cumbersome, I just throw them on the deck where i'm working and just move them around - this seems to work well for me. Hope this helps, certainly will buy the same again. thanks, Simon.