I'm a big fan of the Evelo/Gates Belt/Enviolo drive system, which is not all that common in the ebike market (yet). But they do command a much higher price. The Aurora Sport (Limited SL??) with the chain drive, derailleur, and hub drive puts it into a VERY crowded market with a lot of other good choices. They have reduced the price to $1,700 but there are many ebikes out there in that price range. I noticed that the Aurora Sport has cable operated disk brakes which is not great at that price range. Evelo's service/support is at the top of the chart, but looking at something like the Aventon Level Step Thru at $1,500, it would be a tough choice.