I have the FS 90 and KM 110. I am a big guy and after a day of cutting and trimming the KM110 gets a little heavy. My guys (son) goes for the FS 90 every time. I have quite a few of the attachments for the KM which I like a lot, too, don't know if I would like to carry the extra weight for a the whole day of a 130 or 250.
SHOW ME A MAN WHO LIKES TO LOSE, I WILL SHOW YOU A GUY PLAYING GOLF WITH HIS BOSS.