Had a 14 450 f for a year now , my son picked up a new 15 450 a month ago , the 15 is for racing , the 14 goes back to being a spare race and practice bike , our 250 2t does racing at the sand tracks in the 250 class , and hopefully some 2 stroke only racing. the 15 is quieter , the front brake is better , the forks are good and don't need any mods done to it at the moment , unlike the 14 forks which has also been known to deflate. The 15 is getting the longer dog leg fitted soon , as the 14 has the longer leg and is a better bike for it , for 2016 I like Kawasaki to trim more weight of it like ktm did to there 15 and a half model , less off set in the triple clamps and some foot pegs that don't clog up with mud all the time , we fix this up with a die grinder . A bit more hp to try to keep up to k5 in the straight would be nice as well.