My local bike shop has some shimano deore XT br-m770 v-brakes on sale for $35. Would that offer me anything worthwhile or should I just try different pads, then if im still not satisfied move up to discs? I kind of feel like I wont be satisfied with spending money on the same thing. The only reviews I have been able to find on the br-m770 havent been stellar, mostly 3/5.