There are a few similar suggestions (
except Di2) in
this thread.
However, since you moved to Amsterdam, let me ask you a few questions:
- Where did you live before?
- How far is your commute?
- How sad would you be if this bike was stolen?
- Will you be using a separate bike for when you want to go into the city?
- How often do you plan on recharging the Di2 batteries?
Be aware Amsterdam is one of the worst places for bike theft. Most people use a simple singlespeed, 3-speed or 8-speed for commuting around the city.