I have owned cats, 04 ZR 900 and 03 f5 and 03 f7, then in 07 went to an apex, 09 to nytro and back to 2011 apex, so I am not bias, I have liked all of them, that being said, I rode the 129, 137 and 141. I really like the viper, handles very well, rides nice, fit and finish is decent, lacks on...