Disc brakes are taking over on road bikes and many high end machines are now disc brake only, although other bikes offer you the option to choose disc or rim brakes. There aren’t many pricier models now that only offer rim brakes.
That’s because disc brakes give you more consistent stopping, whatever the weather conditions, better modulation and greater overall stopping power. On the flip side, they’re heavier than rim brakes.
Most disc brake bikes use hydraulic calipers, although you can find mechanical disc brakes, usually on cheaper machines. Discs are creeping down the price range, but several of the most affordable bikes still come with rim brakes.