Originally Posted by
Jiggle
The important changes I see on this 105 are: Vastly better front shifting and better hood shape. It should also be cheaper.
I think front shifting is overrated myself but I didn't feel much difference between 5700/6700 and 6800 front shifting on test rides. I actually prefer the wider hoods on 5700/6700 to 6800 but the difference is pretty small. The front shifting on di2 is pretty cool because of how quickly and effortlessly it happens but I don't do enough front shifting to run out and spend $1500 just for that.