I with jbooker! My wife has the Z400 and loves it! The reverse and the seat are her two most favorite things. The suspension on the 450's are really hard to make soft. I adjusted, and adjusted my YFZ450 to make it soft enough for the wife to ride and enjoy, but that never happened. The Z400 is an all around good quad. Put an exhaust, jets, and K&N on it, and you have yourself one hell of a dune/trail bike. Just my .02