I think that you may have only ridden the ktm 520for a short while,if you think that the WR is a better bike than it. I have ridden three different WR's and they were all **** . I do have to give credt to the only WZ that I have ridden this bike did rev faster than my 520 but you could get the same results from my bike if your game to hold it at a higher reve range. WZs are a better bike for on the track and ime sure that if you compared it to an sx model rather than an exc model you may be very surprised. Another interesting thing that I have noticed about WR owners if they are so good why is it that everyone that I have seen has an after market pipe,electrics,stickers, and the list goes on. All you have to do is buy a ktm and you have the best that is made strait up.