I bought an MTB that has discs on , at first I found them noisey and not quite as I had been led to believe they are the dogs in brakes , I had to really tug on the levers , a cheapish Shimano brand , anyway I bought a new set of XT levers and callipers , never had a peep out of them and no problems in really bad rain or deep mud , I took my Road bike out yesterday for a rest run ( drivetrain mod ,I’ve not ridden it since last August ) , that has Ultegra rim brakes ,newish blocks and well tweaked , all was ok until it rained , they worked well , but I had more confidence in braking with the discs on my MTB , if I get another Roadie I’ll get one with discs I think , just a personal preference,, one thing , if you go for them and do any work on them near the callipers , be as clean as ! otherwise it screech and squeal city ! ,