I've been riding fixed for about a year. I bought a cheap fixie from a local bike shop for cheap and am starting to realize why it was cheap. Now that I'm used to riding fixed and freaking love it, I'm starting to look into upgrading. I'm considering a Bianchi Pista Concept frame and building the rest myself, mostly because there are specific parts I want. One of the more important parts I'm not sure about is the fork. The Bianchi fork doesn't have a place to mount brakes and I need a front brake. I need to ride down an enormous hill to get to work so no breaks isn't an option for me currently (as well as insurance issues if I get in an accident). So should I get a curved or straight fork? My current bike (Uno Cayne) has a straight fork. What's the difference between the two? What about carbon forks, are they just lighter or are they also stiffer?