I'm looking for a new groupset to replace the old ultegra 6700.
Which one is better to buy - ultegra di2 or eTap ?
I've heard a lot of good about di 2, but I do not like their wires.
Are there any functional advantages to the eTap?
First I was a Di2 user and now a eTap user.
I love eTap for the elegance and simplicity. I couldn't miss-shift RD/FD as there's only one button per side. Paddles are bigger with more definite and assured click. Plus their hydro brake is better (the Contact Point Adjustment actually work; hoods texture and shape are more ergonomic).
I liked Di2 for the relatively long battery life (I shift a lot to maintain cadence, eTap RD battery lasted 6xx km only), and the syncho shift was actually quite good (I configured the Di2 shifting like eTap, left hand easy right hand hard, but with syncho shift the FD will shift to avoid cross chaining).
eTap is a keeper for me. You will have to judge for yourself.