I took a test drive on a 650GT today. It had 400mi on it. I was thinking I might like it but I didn't. It sounded like a farm tractor, it seemed slow off the start, and the steering seemed wobbly on a bumpy road. It had less storage space. The seat was comfy but too high for me at 5'4". I thought if I liked it, I might trade the ZZR in but not a chance.