Get the Flybikes calliper, an Odyssey Slic Linear cable, and a Flybikes lever if you want the best.
^^^ Yes, I second that. A bit less expensive, yet still very good quality and feel would be an Odyssey Monolever and Odyssey Evo II Caliper. And the best cable ever made (claimed by many many riders) is the Odyssey Linear Slic Cable (yes, "Slic" is spelled correctly).
Odyssey mono lever is amazing. The fly bikes caliper may be slightly better than the Odyssey evo 2, but that small difference does not justify the price difference, as long as you can set up a brake fairly well, odyssey is the way to go. Plus the odyssey comes with every fitting possible.