I`m coming off of an 04 CRF 450,and I`m looking to maybe get an 05 YZ450. I can put down same lap times on both the 04`s. I just need to know about reliability, durability, and maintenance. I rode an 05 YZ450 already and the bike is awesome. This past season I raced a lot including 3 U.S. Nationals plus arenacross without a single bike problem. Can I expect the same from a YZ if it is well maintained?