I've had the ZX-14 for about 3 weeks now (2000 mi) and I love it! It's seems a little weak below 6000 RPM but when it hits you better be paying attention because it rips! It gets poor milage, about 34-36 MPG with a 5.8 gal tank, but it is comfortable to ride, looks great, handles great and flat HAULS ASS! If Kawasaki comes out with an ST based on the ZX I'd be VERY interested!