Originally Posted by
tntyz
To me, the big advantages are control of screens with the top buttons, seeing the actual battery level of the Di2, and seeing the gears that I'm in. I wish Shimano would have built in the connectivity, but at $75 plus the cost of a cable, it's worth it to me.
That's pretty much the one reason I want the unit. I checked my Di2 yesterday and I have a flashing green light. I'd much prefer to know the exact battery level as opposed to taking my best guess.