The Z900RS looks like something I might want to buy. I don't get this urge often these days as most modern bikes don't interest me in the least but this one looks sweet. I am not a fan of cafe bikes nor Kaw green bikes (sorry) so the RS version and not the cafe are on my shopping list.
It is water cooled which is a great thing in my opinion. The Honda CB1100 is not. It only has an oil cooler. A couple of things I like about my old 85ZN700 is that it is shaft drive and has a center stand. Shaft drive has disappeared from the less expensive bikes because of the added expense and the added weight.
1985 Kawasaki ZN700 Shaft, 4cyl
1989 Yamaha Venture Royale
2007 Yamaha Royal Star Venture