depending on how much you are willing to spend, i am using GU on a grind, make noise, grip very well but dont last very long(£15)i have used heatsink reds cnc on a grind before and my Gu lock better, Coust cnc would probably be the best but expensive, my next pads are probably Majic pads, they cost £10, lock well, last a long time, make a lot of noise, hope i helped