I had rock pads blues and they never really had any bite and were silent , they had good hold thou even in the rain and they didn't wear down at all even thou i used them for around 2 months. Ive had around 4 sets of citrus pads and they are my favorite pads they bite loads really sharp and have good hold but in the rain they go silent and the hold goes , so now Ive got a pair of coustsinks in the plastic backings , i put them on about a week ago and they are working well not as much bite as the citrus pads but the same hold and the hold stayed when i was riding in the rain today and the noise even stayed too. Ive got a medium grind which has started to wear out now , citrus pads will work on almost anything i think its just that the harsher the grind the faster they wear down so if your gonna use citrus pads keep the grind light. i recommend coust pads thou but they are £19 so its quite expensive.