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Maybe not the perfect thread for it, but as it is going on the bike I am going to race come February, this is where I am going to ask. Currently my bike has 105 5600 shifters and RD and Ultegra 6600 FD and brakes (crankset is a non-line Shimano unit). I am going to be moving most of these components onto a Cross frame that I am building, so I am in the market for some new Shimano shifters, RD, crankset, and possibly FD and brakes.
My options, as I want to stick with 10-speed, are Ultegra 6600, 6700, or Dura Ace 7800 or 7900. I do slightly prefer the look of the 6700 and 7900 shifters with the hidden shifter cables and carbon levers, but I have been told these do not shift as nicely as the earlier ones (I know the 105 5800 on my current cross bike does not shift as nice as the 5600 on my road bike). Thankfully most, if not all of these groupsets are compatible with one another, so I just want some opinions on where to go Dura Ace and where to go Ultegra, and which generations I should go with. Thanks in advance.
