They're a bit expensive, but from personal experience and recommendations from friends: Riese & Müller, Stromer, Koga and Flyer. Be aware of trendy brands like VanMoof or Cowboy. An electric bike is not really high tech, no need for brands that act like they're a tech company or the Tesla of electric bikes.

But first of all, look for local dealerships and find out which brands they're selling. You need regular maintenance for your electric bike and many bike shops refuse to work on bikes bought elsewhere, especially cheap bikes bought online, and I can't really blame them.

A good electric bike ain't cheap, but lasts a lot longer than a no name/cheap one. A cheap bike with one problem after the other sucks all the joy out of owning one and is the surest way to a dust collecting piece of metal in the back of your garage, nevermind the extra costs.

And get electric bike insurance. Budget for it in advance. Getting your brand new expensive ebike stolen is quite traumatic.