I've owned both, the 919 feels lighter all the time, and friendly. The Zrex feels like 700 lbs backing up and turning around in a small place. But, when you crack the throttle it'll jump up and slap you in the face with that lil wind screen. It's one of the strongest bikes made at 60-80 in hi gear. But, only one bike, Lil Red Honda gets to stay.