I've just got a Secteur Elite and after coming from a Boardman Hybrid with disc brakes, I'm finding the brakes on the secteur a bit weak tbh. Now I'm no light weight at 17st, but the brakes on the Secteur do not fill me with the confidence I used to have on the Boardman whilst descending. What do you guys reckon? Change the brake blocks on the no name callipers to better ones (recommendations please) or fit a set of Shimano 105 brakes to match the rest of the 105 groupset already on the bike (would these actually be better?) or a combination of both? Or can anyone suggest something else? Or maybe this is as good as rim brakes get?