I have had my z400 for three years, I have my full license but I don't need any more power. I love my bike it is so much fun to ride. You should purchase it for your wife.
I own one, its a 2020 and I absolutely enjoy every bit of it. Enough power and quickness to do just about everything. I am somewhat of a beginner rider and this to me is the perfect bike, add an exhaust and it sounds even better. People sleep on the 400cc I believe people think its slow but its not slow whatsoever. It looks really good as well. Awesome video, I enjoyed every bit of it ANF even learned some new info.
I’m looking at a Z900, tbh, it might be too much for me in terms of a run around, I’ve turned it down a notch and thought of a Z600, tbh, I will look at the Z400 as that will be enough for me as max speed round my way is 20 mph and traffic lol. Looks nippy enough and not weigh a ton lol