We have a '17 Sidewinder LTX LE (shocks w/Kashima coat) and a '15 Viper LTX SE (basic fox floats). I have to say after riding the Viper last weekend, I didn't notice a major difference in ride. I actually thought it did a great job on the not so smooth sections. Granted most of the trails were in good shape. I can't say the better shock package is a noticeable difference. The Viper is the wife's sled and if we had to do it over again, I think she would actually prefer a shorter sled like a 129 vs the LTX. Rider preference I guess, and the person's build/size makes a difference.