I am 15 years old and i am planning to buy a used atv. I am debating between buying a 2005 yamaha Raptor 660r or a 2006 Polaris Outlaw 500 irs. I heard that they go almost the same speed. Does anyone no which one would be a better choice power wise and performance. Also if u know of anything wrong with either of these machines u could write about that. Thx