Addmotor's are nightmare trikes. One guy in town has spent so much money on his and it is still crap after several thousand. He is a big guy in a hilly town. It cannot make it up a hill or stop coming down a hill. Get one that is lightweight and has a rear differential. Don't worry about top speed. All trips in town are less than three miles each way. Range at three or four times that is really all you need, about 24 miles max. All Euro bikes top out at 15.3, which it way too fast for a trike.
That guy is sight impaired, weighs 350 and lives in a hilly town. He cannot make it to his dentist's office. We are talking to him of the economics of throwing good money after bad and installing Magura four piston brakes. At least he could stop. He keeps asking, are there any high quality trikes. Another guy in town has MS and had a $50000 trike hand made for him in England.
I would have turned my trike over a couple of times if the seat was higher & rear wheels wasn't angled like a wheelchair. I can run 15-16mph on it, but perfer 7 or 8. It corners ok, but still a trike