eBike technology explained

Hey everyone!

I've been browsing some of the amazing eBikes hitting the market lately, and it got me thinking about all the tech packed into them. With so many different motor types, battery chemistries, and display features, it can feel a bit overwhelming trying to compare models. What's one piece of eBike technology you think is a must-have, or perhaps something you've found surprisingly useful when looking at new bikes to buy? I'm particularly curious about how different motor technologies (hub vs. mid-drive) really impact the riding experience over varied terrain.