Performance and speed is largely irrelevant seeing we dont ride on the track all the time and going much above the limits gets you banned in short order.
The RS is just fugly, it is neither one thing nor another. It is a cheap motorcycle at circa £10K but that shows in the styling and bits used in the build.
A mint Rex can be bought for half the price and looks way better. It'll hold it's value better too (not that I care personally one way or the other). The Rex IS fast becoming a classic, the RS and it's siblings are just wannabe's with little identity of their own. They are neither classic nor innovative nor even attractive.
That headlight and the indicators on the 900 look like they came from a Chinese 125.
The Jap boys have lost the plot.