I love my etap bikes. One tandem, one road bike. BUT, my road bike etap derailleur has failed. The failure was intermittent; try to shift and it wouldn't move. Not the batteries and maybe the server/motor (not sure of the terminology here). I called my LBS and they didn't bat an eye. Their report? Many etap failures are coming into the shop (as well as campy). Their advice? Stick with Di2 for now. Great. Can I get my money back?
Good to know.
My mechanic, however, reports that Campy is extremely reliable.
Campy waited to get into the electronic shifting field in order to get it right.
This coming summer I plan to change over from Record mechanical to Record electronic on my C60.