Hi, The main things I want in a bike is durability and it will last more than 1 season of racing, I don't want to have to buy a bike every year. Which bike have better suspension, turns better. What You think about reliable and durable of this bike?
Being that both bikes are completely new this year and the Yamaha just hit the dealerships, in the states, I don't think many people have had a chance to throw a leg over both bikes in question. My sugestion would be to search on You Tube. As far as durablity goes, this is personal opion, I didn't like the fact that with 33 hours on 13 CRF450 I had the radiator shrouds chaffed and groved the frame.
A good friend of mine is an A 250 rider who usually finishes in the top 10 in our series. He just switched from a KTM250 2 stroke to a 2014 CRF250 and loves it. He said its just more fun and feels light. Couldnt say anything for the Yamaha however.