Each Milani Steel or Carbon frame is developed to be the best in its class.
Milani handcrafted Steel frames provide smooth controlled rides, great for training and long distance riding/tours. Milani Carbon frames such as the N107 road bike frame are perfect for Triathlons or timed events in any situation that requires climbing, sprinting and confident handling, and excels over long distances. The Milani N107 uses 3K Toray high quality carbon and features small aero faring over rear wheel with wind slicing bottom bracket.
Regarding choosing the build level, the main difference between the different levels of one brand (Shimano, SRAM or Campagnolo) is in the decreasing weights as the price goes up. With modern high quality group sets, like Electronic shifting quality does not vary much from level to level.
All Milani frames and bikes are different and cannot be directly compared one against the other. It is up to you to decide which one would suit you best given the type of riding that you would like to do. Please also keep in mind the geometries of each frame to asses if you will be able to achieve a riding position that you are seeking.
Cycle Associates 2385 NW Executive Center Dr#100Boca Raton, Florida 33431561-929-5252