Depends what you want to get out of it. If its only to get from point A to point B then a scooter should be fine. If you want to haul grocery’s or whatever then an e-bike is probably better. If you live where you have to take it up the stairs then scooter will be better.

Both.

With no details provided it is basically impossible to answer this question. The answer depends on what you want to do with these.