I'm not the most knowledgeable on this topic - but we got an Aventon (Sinch) last year in Nov when they were having a sale.
With this cold winter haven't used it much at all but plan is to use it for groceries etc. it's not as nice and easy to ride as other fancier ones I read but I think it's pretty great. All kinds of hills here so the ebike is great - it's pretty zippy actually.