I am 15 years old, 6' tall, and about 200 pounds. I have been riding for about 3 years now and for the last year, i rode a ttr225 (very easily). I am looking to invest in a new bike but i do not know what is right for me. I mostly ride trails and i have been looking for either a yz400f, wr400, or drz-400. i am not sure what i should do. Any input would be greatly appricieated. Thank you.