Avid Single Digit 5 V-Brake 2014
The SD 5's stiff and efficient forged aluminum arms don't weigh a lot and still stop on a dime. It's a high performance brake that leaves some money in your pocket and your teeth in your mouth.
I bought a pair of these for a custom build I was doing for a friend's birthday present. She said they had more doing power than her old bike by a long, long ways. So much that she tipped up about 45° and almost endo'd the first real emergency stop. I tried to tell her only one finger on the front. These are very good bang for your buck, just ride careful.