Hi everyone, I have been looking for a new bike for awhile now and I have seen a few deals on craigslist for a yz426. I don't know much about these bikes and was wondering if they are any good, any problems with them, power, size, etc. I am 15, 5' 7", 140 pounds, Intermediate skill level (I've been riding since I was 8), and am coming off of a 2003 YZ 85. I ride 80% trails and 20% track. Thanks!!