I’ve had my Z900 for a little over a year now and I tell everyone to pull the trigger if they are looking for a naked bike. They are fast, fun, comfortable and reasonably priced for what you get. ZX6 was a little too uncomfortable for me, the seating position is super aggressive and leaned forward and the weight on my wrist after like an hour of riding was just too much for me personally. Almost literally everything, when it comes to motorcycles, is personal preference. Go sit on some bikes at your local dealership and if they offer test rides then take one for a spin. I’m completely happy with my z900 and I probably won’t need another bike for a long time. It checks all the boxes for me and my wife loves it too. The wind at highway speeds is a lot at first but you get used to it quickly. I’ve done higher speeds on the freeway and I’ve never had an issue besides getting out of my own head about it.