I hoping to purchase a 2007 wr450 or left over 2005 or 2006 this week. For those of you that had the chance to spent time on a 07 and either an 06/05 is there a notable improvement in handling and overall performance. I can save around $1500 on a left over. However I don't have a problem spending the money because I plan keeping it for a long time and I will be spending a fair amount on mods. Thanks for any help.