There are many to choose from and lots of info to digest when shopping.
We have 2 Jupiter folding Discovery e bikes and love them. Do your research and take everything into consideration. Weight, wheel size, battery and motor size, speed,distance and do you really need it to fold.
Also realize the speed, range, and power to climb hills will be changed with the weight of the rider. Prices and features are getting better every day, but don't wait to get one.
We have really nice Specialized brand regular bikes and the e bikes are a total game changer.
Good luck with whatever you decide.
Jeff