Hi Marco,
Of the three you've listed, Bianchi looks the best in terms of appearance and specification. Cube comes next.
Bianchi or Cube? Depending on which of them you can get locally from your Local Bike Store to be warrantied, serviced and repaired there. If you like convenience, go for belt drive. If you want something every bike shop (and even you) can repair fast, go for derailleur. (To me, the Bianchi is a beauty!)
I understand you need to travel 27 km one way daily. Expect average speed of a 25 km/h e-bike to be 21 km/h. Meaning, one hour and twenty minutes one way. Is it OK for you? An S-Pedelec would -- in practical (!!!) terms -- let you reduce your travel time to just one hour, perhaps less. If you are a law-abiding person, think of registration, insurance, helmet, and even perhaps a driving license (depending on your age). And, technically speaking, S-Pedelecs are not allowed on bike paths in the EU.
I wouldn't even consider the GoCycle (it doesn't compare to the other two and is indeed weird). Unknown Chinese hub motor against renowned Bosch CX mid-drive motor, smallish battery, wheels hard to be replaced. That's not a serious thing if you ask me. You might even miss the range with that battery!