When we gey my atv paid off im thinking about getting something a little different I want something thats got a lot of get up and go ive got a lot of bikes im considering first off I like the TRX450r im just worried about the valve adjustments and the maintenance i can do a oil change and clean the airfter but i havent ever done a valve adjustment, my other options are a crf250,400ex,ltz400,yz125, or if i can find one a nice trx700xx thanks and im open to other recomendations.