I know that there are some guys out there who think the YZ is the best and others who think the KTM is top dog. My opinion is that the bikes are even, it just depends on what type of power you like. The KTM is lighter and more powerful, but takes longer to get through the powerband. Also the stock steering geometry is off, so it has a hard time with tight corners. An aftermarket offset clamp fixes this. The YZ is heavier, and doesn't make as much power, but it makes its power in a hurry and revs very quickly. Try riding each bike and see which one you like.