Which EV bike is best for delivery in Karachi? Looking for recommendations

Assalam o Alaikum everyone. I've been riding a 70cc for 4 years and my maintenance costs are killing me. Thinking of switching to an EV bike. Has anyone tried the Jolta, Unite, or Ravi EV? Which one holds up best on the roads of Karachi? My daily route is around 80-100km. Any advice would be appreciated.