Please help me choose!! I decided to go with a cannondale bike because I really like the bike shop that carries the bikes. I am stuck between the r700 and r900. The 700 uses shimano 105/ultegra 9 speed, and has shimano wheels. The 900 uses almost all campy veloce 10 speed, and the bike also comes with mavic wheels. The reason I am stuck is that there is a 350$ dollar difference for the 900. Is it worth the extra 350$? It seems like a great deal to get the 900 but i wonder if ill notice the difference since this is my first bike.