Exploring electric bikes and I'm looking for owner experiences with the VoltBike Yukon 750 limited (17" frame), VoltBike Elegant, and/ or Spark x or City. Also appreciate hearing about your experiences with other models/ brands of bikes of comparable quality at a similar price point. Interested in full sized bikes with min 26" tires, suitable for a 5'4"-5'7" ish rider. Thanks in advance!