in two years of riding, I have never snapped a cable. I do tend to change the inners once a month though to keep them smooth (bulk boxes come in handy, £30 for 100 cables, lasted over 2 years now). I use Shimano Xt (non linkage type) as they have the lowest profile of any I have seen, this means I can run them with my adaptors on the middle setting and not have the arms sticking out at funny angles, this means I can use a decent booster like an xtr carbon one. I have tried the brake without a booster and the hold was terrible! They deffo need boosters in my opinion.