Nova Motors City Star or Kallio Explorer?

Hey, I’m still totally new here and also completely new about motoroller. I’m a student and would like to get a scooter, because a car is too expensive for me and I don’t need it in my opinion. A scooter would be a great alternative to drive with him to university or somewhere (which is not so far away). Unfortunately, I’ve never driven Rolelr before and I don’t know what to look for at a purchase at all. But now I have an offer for a Kallio Explorer for 520€, which has driven a little bit over 500km and should be technically and optically flawless. I will look at it the day after tomorrow, take a friend with me, who knows a little better with scooters. I know that this scooter is not a highlight, but I also don’t want to spend too much money. On the other hand, there is the City Star of Nova Motors to a New price of 750€: http://www.nova-motors.de/motor scooter/city-star-black-silver Now I am somewhat indecisive, because I cannot judge which of these scooters is more suitable for me, or which is better or worse at all. So for expert opinion I would be very dankbar!