Some observations and opinions. First off most can agree the OEM seat feels great sitting in the showroom. However after about 80 miles the pain starts. Note the 2014 seat is an improvement over the 2012. Corbin seatwas on my 2014 and I loved it however the wife felt it was too hard and did not care for the back rest always in the way.so when I got the 2014 i purchased the ultimate seat. Much better than stock but I still prefer Corbin comfort. However since the wife likes it more we will be keeping it.the ultimate seems to be a little bit thicker and massy than the Corbin. But it is nice to just pop out the backrest when the wife goes.backrest note.the corbin IMHO IS A BIT more comfortable with more adjustment available. Hope this helps others looking.