i used the angel ones on sunday, they kept falling down, tried tapin em to me legs too, didnt do much good, ill try again soon, see if i can get em to stay put.
Dye C4 or C5 pads are great for staying on your knees while sliding.
A mate of mine also has some JT's that look to be just at well made. I'll try to dig u p a picture for ya.
got a pair of dye C5 pads, theyre awesome, they dont move at all, only thing is they dont breathe at all so after leaving them on for 3 hours (i learnt this v quick.. in 3 hours in fact), they get sticky, and not so comfy