I tested one today and can now see the differences in comparison to my 2017 model, I agree with the OP that the throttle is excellent, instant acceleration and feels more responsive than the '17 model. Quickshifter is fun, up and down the box at lowish speeds without too much fuss or snatch. The seat is higher, plusher, to me it rides and handles very much like the new Z900, which I was recently given as a loan bike. I felt more sat on top going into bends but am now seriously looking at buying one. The 17 model is a good bike but if you have the spare money, I think it's worth buying.