My partner has finally agreed to buy an e-bike mainly to use on her 10km return commute (with a decent 1.5km hill on the return). I am an experienced road cyclist and have worked on many bikes over the years. I know nothing about e-bikes and am looking for advice on whether to get an front/rear or crank driven model, do they come with internally geared hubs or are derailleurs and cassette the norm( I'm thinking in terms of maintenance regarding the igh) any advice would be appreciated